<?xml version="1.0"?>
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	<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?action=history&amp;feed=atom&amp;title=Odynau_calch</id>
	<title>Odynau calch - Hanes golygu</title>
	<link rel="self" type="application/atom+xml" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?action=history&amp;feed=atom&amp;title=Odynau_calch"/>
	<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;action=history"/>
	<updated>2026-04-06T10:53:45Z</updated>
	<subtitle>Hanes diwygio&#039;r dudalen hon ar y wici</subtitle>
	<generator>MediaWiki 1.43.1</generator>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15528&amp;oldid=prev</id>
		<title>Irion am 16:26, 27 Chwefror 2024</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15528&amp;oldid=prev"/>
		<updated>2024-02-27T16:26:04Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 17:26, 27 Chwefror 2024&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l8&quot;&gt;Llinell 8:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 8:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Odyn Tyddyn Hen, ger Gurn Goch&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Odyn Tyddyn Hen, ger Gurn Goch&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn Tŷ Coch, [[Clynnog Fawr]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn Tŷ Coch, [[Clynnog Fawr]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Tŷ Coch]] ger [[Porth Clynnog]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;galch &lt;/ins&gt;Tŷ Coch]] ger [[Porth Clynnog]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Llyn-y-gele]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Llyn-y-gele]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]] ger [[Y Foryd Bach]], sef aber [[Afon Gwyrfai]].&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]] ger [[Y Foryd Bach]], sef aber [[Afon Gwyrfai]].&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15527&amp;oldid=prev</id>
		<title>Irion am 16:25, 27 Chwefror 2024</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15527&amp;oldid=prev"/>
		<updated>2024-02-27T16:25:08Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 17:25, 27 Chwefror 2024&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l8&quot;&gt;Llinell 8:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 8:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Odyn Tyddyn Hen, ger Gurn Goch&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Odyn Tyddyn Hen, ger Gurn Goch&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn Tŷ Coch, [[Clynnog Fawr]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn Tŷ Coch, [[Clynnog Fawr]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Odyn [[Porth Clynnog]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[&lt;/ins&gt;Odyn &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Tŷ Coch]] ger &lt;/ins&gt;[[Porth Clynnog]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Llyn-y-gele]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Llyn-y-gele]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]] ger [[Y Foryd Bach]], sef aber [[Afon Gwyrfai]].&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]] ger [[Y Foryd Bach]], sef aber [[Afon Gwyrfai]].&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15503&amp;oldid=prev</id>
		<title>Cyfaill Eben am 17:04, 22 Chwefror 2024</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15503&amp;oldid=prev"/>
		<updated>2024-02-22T17:04:38Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 18:04, 22 Chwefror 2024&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae olion nifer o &#039;&#039;&#039;odynau calch&#039;&#039;&#039; wedi eu dangos ar fapiau Ordnans a gyhoeddwyd tua 1889.&amp;lt;ref&amp;gt;Mapiau Ordnans 6&quot; i&#039;r filltir, &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;golygyddiad &lt;/del&gt;cyntaf&amp;lt;/ref&amp;gt; Roedd y rhain i gyd ar lan y môr, a&#039;u diben oedd cynhesu calchfaen nes &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;iddi &lt;/del&gt;droi&#039;n bowdwr y gellid ei daenu ar y tir i&#039;w &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;dadasideiddio &lt;/del&gt;a&#039;i wneud yn fwy ffrwythlon. Mae hyn yn arfer sydd yn dyddio&#039;n ôl dros o leiaf &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;dwy &lt;/del&gt;ganrif a hanner yn [[Uwchgwyrfai]]. Defnyddid calch hefyd fel un o gynhwysion plaster a mortar, ac (o&#039;i gymysgu gyda dŵr) i wyngalchu adeiladau er mwyn lladd afiechydon. Roedd yr odynau ar lan y môr, a hynny ger aber neu draeth gwastad, er mwyn derbyn y &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;galchfaen &lt;/del&gt;oddi ar longau. Byddai glo i gynhesu&#039;r odynau hefyd yn dod ar longau. Byddai&#039;r rhain yn llongau gyda gwaelod gweddol fflat fel y gallent ddod at y lan ar ben llanw a setlo ar y traeth wrth i&#039;r llanw fynd allan. Byddai&#039;r glo&#039;n dod naill ai o Falltraeth neu o ardal y Fflint, a&#039;r calch naill ai o Sir Fôn neu ardal y Gogarth, gan nad oedd calchfaen ar gael yn nes na hynny.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae olion nifer o &#039;&#039;&#039;odynau calch&#039;&#039;&#039; wedi eu dangos ar fapiau Ordnans a gyhoeddwyd tua 1889.&amp;lt;ref&amp;gt;Mapiau Ordnans 6&quot; i&#039;r filltir, &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;golygiad &lt;/ins&gt;cyntaf&amp;lt;/ref&amp;gt; Roedd y rhain i gyd ar lan y môr, a&#039;u diben oedd cynhesu calchfaen nes &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;iddo &lt;/ins&gt;droi&#039;n bowdwr y gellid ei daenu ar y tir i&#039;w &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ddadasideiddio &lt;/ins&gt;a&#039;i wneud yn fwy ffrwythlon. Mae hyn yn arfer sydd yn dyddio&#039;n ôl dros o leiaf &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ddwy &lt;/ins&gt;ganrif a hanner yn [[Uwchgwyrfai]]. Defnyddid calch hefyd fel un o gynhwysion plaster a mortar, ac (o&#039;i gymysgu gyda dŵr) i wyngalchu adeiladau er mwyn lladd afiechydon. Roedd yr odynau ar lan y môr, a hynny ger aber neu draeth gwastad, er mwyn derbyn y &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;calchfaen &lt;/ins&gt;oddi ar longau. Byddai glo i gynhesu&#039;r odynau hefyd yn dod ar longau. Byddai&#039;r rhain yn llongau gyda gwaelod gweddol fflat &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;iddynt &lt;/ins&gt;fel y gallent ddod at y lan ar ben llanw a setlo ar y traeth wrth i&#039;r llanw fynd allan. Byddai&#039;r glo&#039;n dod naill ai o Falltraeth neu o ardal y Fflint, a&#039;r calch naill ai o Sir Fôn neu ardal y Gogarth, gan nad oedd calchfaen ar gael yn nes na hynny.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Nodir chwech o odynau ar fapiau 1889, gyda thair yn cael eu galw&#039;n &#039;&#039;&quot;old limekilns&quot;&#039;&#039;, er na ddylid cymryd yn ganiataol bod y lleill yn dal i weithio. Mae&#039;n debyg mai dal i sefyll a heb ddadfeilio oeddynt, gan fod dyfodiad y rheilffordd i Uwchgwyrfai tua 1867 wedi golygu y gellid mewnforio calch o ddwyrain Cymru&#039;n rhatach, a hynny at seidins yn nes &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;i &lt;/del&gt;ffermydd yr ucheldir lle &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;oedd &lt;/del&gt;y mwyaf o angen am galch, gan mor asidig yw&#039;r pridd yno.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Nodir chwech o odynau ar fapiau 1889, gyda thair yn cael eu galw&#039;n &#039;&#039;&quot;old limekilns&quot;&#039;&#039;, er na ddylid cymryd yn ganiataol bod y lleill yn dal i weithio. Mae&#039;n debyg mai dal i sefyll a heb ddadfeilio oeddynt, gan fod dyfodiad y rheilffordd i Uwchgwyrfai tua 1867 wedi golygu y gellid mewnforio calch o ddwyrain Cymru&#039;n rhatach, a hynny at seidins yn nes &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;at &lt;/ins&gt;ffermydd yr ucheldir lle &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;roedd &lt;/ins&gt;y mwyaf o angen am galch, gan mor asidig yw&#039;r pridd yno.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Dyma&#039;r odynau calch a ddangosir ar y mapiau Ordnans - er dim ond Odyn y Foryd sydd yn cael ei enwi. Fel arall, rhoddir enw&#039;r fferm agosaf yn y rhestr isod.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Dyma&#039;r odynau calch a ddangosir ar y mapiau Ordnans - er &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;mai &lt;/ins&gt;dim ond Odyn y Foryd sydd yn cael ei enwi. Fel arall, rhoddir enw&#039;r fferm agosaf yn y rhestr isod.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn galch Trefor]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn galch Trefor]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Aberafon]], ger [[Gurn Goch]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Aberafon]], ger [[Gurn Goch]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l12&quot;&gt;Llinell 12:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 12:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]] ger [[Y Foryd Bach]], sef aber [[Afon Gwyrfai]].&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]] ger [[Y Foryd Bach]], sef aber [[Afon Gwyrfai]].&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Roedd Odyn Galch y Foryd yn weithredol erbyn 1814 os nad llawer cyn hynny.&amp;lt;ref&amp;gt;Archifdy Prifysgol Bangor, Llsgrau. Porth-yr-aur 6829 (11)&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Roedd Odyn Galch y Foryd yn weithredol erbyn 1814&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;, &lt;/ins&gt;os nad llawer cyn hynny.&amp;lt;ref&amp;gt;Archifdy Prifysgol Bangor, Llsgrau. Porth-yr-aur 6829 (11)&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Erbyn 1914, nid oedd y map Ordnans yn cynnwys odynau Aberafon a Phorth Clynnog, tra bod odynau Tyddyn Hen, Tŷ Coch a Llyn-y-gele yn cael eu disgrifio fel &quot;&#039;&#039;old limekilns&#039;&#039;&quot;. Mae&#039;n &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;debyg &lt;/del&gt;mai&#039;r odyn olaf i fod yn weithredol yn Uwchgwyrfai oedd Odyn y Foryd, ond disgrifir honno hyd yn oed ar y map fel odyn nad yw&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;r &lt;/del&gt;gweithio, a hynny er ei bod wrth hen gei [[Y Foryd]].&amp;lt;ref&amp;gt;Map Ordnans 6&quot; i&#039;r filltir, arolwg 1914, cyhoeddwyd 1920&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Erbyn 1914, nid oedd y map Ordnans yn cynnwys odynau Aberafon a Phorth Clynnog, tra bod odynau Tyddyn Hen, Tŷ Coch a Llyn-y-gele yn cael eu disgrifio fel &quot;&#039;&#039;old limekilns&#039;&#039;&quot;. Mae&#039;n &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;debygol &lt;/ins&gt;mai&#039;r odyn olaf i fod yn weithredol yn Uwchgwyrfai oedd Odyn y Foryd, ond disgrifir honno hyd yn oed ar y map fel odyn nad yw&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;n &lt;/ins&gt;gweithio, a hynny er ei bod wrth hen gei [[Y Foryd]].&amp;lt;ref&amp;gt;Map Ordnans 6&quot; i&#039;r filltir, arolwg 1914, cyhoeddwyd 1920&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Cyfeiriadau==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Cyfeiriadau==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Cyfaill Eben</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15502&amp;oldid=prev</id>
		<title>Irion am 14:26, 22 Chwefror 2024</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15502&amp;oldid=prev"/>
		<updated>2024-02-22T14:26:05Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 15:26, 22 Chwefror 2024&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l4&quot;&gt;Llinell 4:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 4:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Dyma&amp;#039;r odynau calch a ddangosir ar y mapiau Ordnans - er dim ond Odyn y Foryd sydd yn cael ei enwi. Fel arall, rhoddir enw&amp;#039;r fferm agosaf yn y rhestr isod.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Dyma&amp;#039;r odynau calch a ddangosir ar y mapiau Ordnans - er dim ond Odyn y Foryd sydd yn cael ei enwi. Fel arall, rhoddir enw&amp;#039;r fferm agosaf yn y rhestr isod.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Trefor]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;galch &lt;/ins&gt;Trefor]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Aberafon]], ger [[Gurn Goch]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Aberafon]], ger [[Gurn Goch]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Odyn Tyddyn Hen, ger Gurn Goch&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Odyn Tyddyn Hen, ger Gurn Goch&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15501&amp;oldid=prev</id>
		<title>Irion am 14:25, 22 Chwefror 2024</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15501&amp;oldid=prev"/>
		<updated>2024-02-22T14:25:39Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 15:25, 22 Chwefror 2024&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae olion nifer o &#039;&#039;&#039;odynau calch&#039;&#039;&#039; wedi eu dangos ar fapiau Ordnans a gyhoeddwyd tua 1889.&amp;lt;ref&amp;gt;Mapiau Ordnans 6&quot; i&#039;r filltir, golygyddiad cyntaf&amp;lt;/ref&amp;gt; Roedd y rhain i gyd ar lan y môr, a&#039;u diben oedd cynhesu calchfaen nes iddi droi&#039;n bowdwr y gellid ei daenu ar y tir i&#039;w dadasideiddio a&#039;i wneud yn fwy ffrwythlon. Mae hyn yn arfer sydd yn dyddio&#039;n ôl dros o leiaf dwy ganrif a hanner yn [[Uwchgwyrfai]]. Roedd yr odynau ar lan y môr, a hynny ger aber neu draeth gwastad, er mwyn derbyn y galchfaen oddi ar longau. Byddai glo i gynhesu&#039;r odynau hefyd yn dod ar longau. Byddai&#039;r rhain yn llongau gyda gwaelod gweddol fflat fel y gallent ddod at y lan ar ben llanw a setlo ar y traeth wrth i&#039;r llanw fynd allan. Byddai&#039;r glo&#039;n dod naill ai o Falltraeth neu o ardal y Fflint, a&#039;r calch naill ai o Sir Fôn neu ardal y Gogarth, gan nad oedd calchfaen ar gael yn nes na hynny.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae olion nifer o &#039;&#039;&#039;odynau calch&#039;&#039;&#039; wedi eu dangos ar fapiau Ordnans a gyhoeddwyd tua 1889.&amp;lt;ref&amp;gt;Mapiau Ordnans 6&quot; i&#039;r filltir, golygyddiad cyntaf&amp;lt;/ref&amp;gt; Roedd y rhain i gyd ar lan y môr, a&#039;u diben oedd cynhesu calchfaen nes iddi droi&#039;n bowdwr y gellid ei daenu ar y tir i&#039;w dadasideiddio a&#039;i wneud yn fwy ffrwythlon. Mae hyn yn arfer sydd yn dyddio&#039;n ôl dros o leiaf dwy ganrif a hanner yn [[Uwchgwyrfai]]&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;. Defnyddid calch hefyd fel un o gynhwysion plaster a mortar, ac (o&#039;i gymysgu gyda dŵr) i wyngalchu adeiladau er mwyn lladd afiechydon&lt;/ins&gt;. Roedd yr odynau ar lan y môr, a hynny ger aber neu draeth gwastad, er mwyn derbyn y galchfaen oddi ar longau. Byddai glo i gynhesu&#039;r odynau hefyd yn dod ar longau. Byddai&#039;r rhain yn llongau gyda gwaelod gweddol fflat fel y gallent ddod at y lan ar ben llanw a setlo ar y traeth wrth i&#039;r llanw fynd allan. Byddai&#039;r glo&#039;n dod naill ai o Falltraeth neu o ardal y Fflint, a&#039;r calch naill ai o Sir Fôn neu ardal y Gogarth, gan nad oedd calchfaen ar gael yn nes na hynny.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Nodir chwech o odynau ar fapiau 1889, gyda thair yn cael eu galw&amp;#039;n &amp;#039;&amp;#039;&amp;quot;old limekilns&amp;quot;&amp;#039;&amp;#039;, er na ddylid cymryd yn ganiataol bod y lleill yn dal i weithio. Mae&amp;#039;n debyg mai dal i sefyll a heb ddadfeilio oeddynt, gan fod dyfodiad y rheilffordd i Uwchgwyrfai tua 1867 wedi golygu y gellid mewnforio calch o ddwyrain Cymru&amp;#039;n rhatach, a hynny at seidins yn nes i ffermydd yr ucheldir lle oedd y mwyaf o angen am galch, gan mor asidig yw&amp;#039;r pridd yno.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Nodir chwech o odynau ar fapiau 1889, gyda thair yn cael eu galw&amp;#039;n &amp;#039;&amp;#039;&amp;quot;old limekilns&amp;quot;&amp;#039;&amp;#039;, er na ddylid cymryd yn ganiataol bod y lleill yn dal i weithio. Mae&amp;#039;n debyg mai dal i sefyll a heb ddadfeilio oeddynt, gan fod dyfodiad y rheilffordd i Uwchgwyrfai tua 1867 wedi golygu y gellid mewnforio calch o ddwyrain Cymru&amp;#039;n rhatach, a hynny at seidins yn nes i ffermydd yr ucheldir lle oedd y mwyaf o angen am galch, gan mor asidig yw&amp;#039;r pridd yno.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15491&amp;oldid=prev</id>
		<title>Irion am 20:54, 21 Chwefror 2024</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15491&amp;oldid=prev"/>
		<updated>2024-02-21T20:54:27Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 21:54, 21 Chwefror 2024&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l4&quot;&gt;Llinell 4:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 4:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Dyma&amp;#039;r odynau calch a ddangosir ar y mapiau Ordnans - er dim ond Odyn y Foryd sydd yn cael ei enwi. Fel arall, rhoddir enw&amp;#039;r fferm agosaf yn y rhestr isod.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Dyma&amp;#039;r odynau calch a ddangosir ar y mapiau Ordnans - er dim ond Odyn y Foryd sydd yn cael ei enwi. Fel arall, rhoddir enw&amp;#039;r fferm agosaf yn y rhestr isod.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt; *[[Odyn Trefor]]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Aberafon]], ger [[Gurn Goch]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Aberafon]], ger [[Gurn Goch]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Odyn Tyddyn Hen, ger Gurn Goch&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Odyn Tyddyn Hen, ger Gurn Goch&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot;&gt;Llinell 11:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 12:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]] ger [[Y Foryd Bach]], sef aber [[Afon Gwyrfai]].&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]] ger [[Y Foryd Bach]], sef aber [[Afon Gwyrfai]].&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Roedd Odyn Galch y &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;FOryd &lt;/del&gt;yn weithredol erbyn 1814 os nad llawer cyn hynny.&amp;lt;ref&amp;gt;Archifdy Prifysgol Bangor, Llsgrau. Porth-yr-aur 6829 (11)&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Roedd Odyn Galch y &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Foryd &lt;/ins&gt;yn weithredol erbyn 1814 os nad llawer cyn hynny.&amp;lt;ref&amp;gt;Archifdy Prifysgol Bangor, Llsgrau. Porth-yr-aur 6829 (11)&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Erbyn 1914, nid oedd y map Ordnans yn cynnwys odynau Aberafon a Phorth Clynnog, tra bod odynau Tyddyn Hen, Tŷ Coch a Llyn-y-gele yn cael eu disgrifio fel &amp;quot;&amp;#039;&amp;#039;old limekilns&amp;#039;&amp;#039;&amp;quot;. Mae&amp;#039;n debyg mai&amp;#039;r odyn olaf i fod yn weithredol yn Uwchgwyrfai oedd Odyn y Foryd, ond disgrifir honno hyd yn oed ar y map fel odyn nad yw&amp;#039;r gweithio, a hynny er ei bod wrth hen gei [[Y Foryd]].&amp;lt;ref&amp;gt;Map Ordnans 6&amp;quot; i&amp;#039;r filltir, arolwg 1914, cyhoeddwyd 1920&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Erbyn 1914, nid oedd y map Ordnans yn cynnwys odynau Aberafon a Phorth Clynnog, tra bod odynau Tyddyn Hen, Tŷ Coch a Llyn-y-gele yn cael eu disgrifio fel &amp;quot;&amp;#039;&amp;#039;old limekilns&amp;#039;&amp;#039;&amp;quot;. Mae&amp;#039;n debyg mai&amp;#039;r odyn olaf i fod yn weithredol yn Uwchgwyrfai oedd Odyn y Foryd, ond disgrifir honno hyd yn oed ar y map fel odyn nad yw&amp;#039;r gweithio, a hynny er ei bod wrth hen gei [[Y Foryd]].&amp;lt;ref&amp;gt;Map Ordnans 6&amp;quot; i&amp;#039;r filltir, arolwg 1914, cyhoeddwyd 1920&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15470&amp;oldid=prev</id>
		<title>Irion am 17:14, 19 Chwefror 2024</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15470&amp;oldid=prev"/>
		<updated>2024-02-19T17:14:09Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 18:14, 19 Chwefror 2024&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l10&quot;&gt;Llinell 10:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 10:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Llyn-y-gele]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Llyn-y-gele]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]] ger [[Y Foryd Bach]], sef aber [[Afon Gwyrfai]].&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]] ger [[Y Foryd Bach]], sef aber [[Afon Gwyrfai]].&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Roedd Odyn Galch y FOryd yn weithredol erbyn 1814 os nad llawer cyn hynny.&amp;lt;ref&amp;gt;Archifdy Prifysgol Bangor, Llsgrau. Porth-yr-aur 6829 (11)&amp;lt;/ref&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Erbyn 1914, nid oedd y map Ordnans yn cynnwys odynau Aberafon a Phorth Clynnog, tra bod odynau Tyddyn Hen, Tŷ Coch a Llyn-y-gele yn cael eu disgrifio fel &amp;quot;&amp;#039;&amp;#039;old limekilns&amp;#039;&amp;#039;&amp;quot;. Mae&amp;#039;n debyg mai&amp;#039;r odyn olaf i fod yn weithredol yn Uwchgwyrfai oedd Odyn y Foryd, ond disgrifir honno hyd yn oed ar y map fel odyn nad yw&amp;#039;r gweithio, a hynny er ei bod wrth hen gei [[Y Foryd]].&amp;lt;ref&amp;gt;Map Ordnans 6&amp;quot; i&amp;#039;r filltir, arolwg 1914, cyhoeddwyd 1920&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Erbyn 1914, nid oedd y map Ordnans yn cynnwys odynau Aberafon a Phorth Clynnog, tra bod odynau Tyddyn Hen, Tŷ Coch a Llyn-y-gele yn cael eu disgrifio fel &amp;quot;&amp;#039;&amp;#039;old limekilns&amp;#039;&amp;#039;&amp;quot;. Mae&amp;#039;n debyg mai&amp;#039;r odyn olaf i fod yn weithredol yn Uwchgwyrfai oedd Odyn y Foryd, ond disgrifir honno hyd yn oed ar y map fel odyn nad yw&amp;#039;r gweithio, a hynny er ei bod wrth hen gei [[Y Foryd]].&amp;lt;ref&amp;gt;Map Ordnans 6&amp;quot; i&amp;#039;r filltir, arolwg 1914, cyhoeddwyd 1920&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15467&amp;oldid=prev</id>
		<title>Irion am 16:13, 19 Chwefror 2024</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15467&amp;oldid=prev"/>
		<updated>2024-02-19T16:13:06Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 17:13, 19 Chwefror 2024&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l9&quot;&gt;Llinell 9:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 9:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Odyn [[Porth Clynnog]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Odyn [[Porth Clynnog]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Llyn-y-gele]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Llyn-y-gele]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]] &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ger [[Y Foryd Bach]], sef aber [[Afon Gwyrfai]].&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Erbyn 1914, nid oedd y map Ordnans yn cynnwys odynau Aberafon a Phorth Clynnog, tra bod odynau Tyddyn Hen, Tŷ Coch a Llyn-y-gele yn cael eu disgrifio fel &amp;quot;&amp;#039;&amp;#039;old limekilns&amp;#039;&amp;#039;&amp;quot;. Mae&amp;#039;n debyg mai&amp;#039;r odyn olaf i fod yn weithredol yn Uwchgwyrfai oedd Odyn y Foryd, ond disgrifir honno hyd yn oed ar y map fel odyn nad yw&amp;#039;r gweithio, a hynny er ei bod wrth hen gei [[Y Foryd]].&amp;lt;ref&amp;gt;Map Ordnans 6&amp;quot; i&amp;#039;r filltir, arolwg 1914, cyhoeddwyd 1920&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Erbyn 1914, nid oedd y map Ordnans yn cynnwys odynau Aberafon a Phorth Clynnog, tra bod odynau Tyddyn Hen, Tŷ Coch a Llyn-y-gele yn cael eu disgrifio fel &amp;quot;&amp;#039;&amp;#039;old limekilns&amp;#039;&amp;#039;&amp;quot;. Mae&amp;#039;n debyg mai&amp;#039;r odyn olaf i fod yn weithredol yn Uwchgwyrfai oedd Odyn y Foryd, ond disgrifir honno hyd yn oed ar y map fel odyn nad yw&amp;#039;r gweithio, a hynny er ei bod wrth hen gei [[Y Foryd]].&amp;lt;ref&amp;gt;Map Ordnans 6&amp;quot; i&amp;#039;r filltir, arolwg 1914, cyhoeddwyd 1920&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15463&amp;oldid=prev</id>
		<title>Irion am 16:07, 19 Chwefror 2024</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15463&amp;oldid=prev"/>
		<updated>2024-02-19T16:07:34Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 17:07, 19 Chwefror 2024&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l1&quot;&gt;Llinell 1:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 1:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae olion nifer o &#039;&#039;&#039;odynau calch&#039;&#039;&#039; wedi eu dangos ar fapiau Ordnans a gyhoeddwyd tua 1889.&amp;lt;ref&amp;gt;Mapiau Ordnans 6&quot; i&#039;r filltir, golygyddiad cyntaf&amp;lt;/ref&amp;gt; Roedd y rhain i gyd ar lan y môr, a&#039;u diben oedd cynhesu calchfaen nes iddi droi&#039;n bowdwr y gellid ei daenu ar y tir i&#039;w dadasideiddio a&#039;i wneud yn fwy ffrwythlon. Mae hyn yn arfer sydd yn dyddio&#039;n ôl dros o leiaf dwy ganrif a hanner yn Uwchgwyrfai. Roedd yr odynau ar lan y môr, a hynny ger aber neu draeth gwastad, er mwyn derbyn y galchfaen oddi ar longau. Byddai glo i gynhesu&#039;r odynau hefyd yn dod ar longau. Byddai&#039;r rhain yn llongau gyda gwaelod gweddol fflat fel y gallent ddod at y lan ar ben llanw a setlo ar y traeth wrth i&#039;r llanw fynd allan. Byddai&#039;r glo&#039;n dod naill ai o Falltraeth neu o ardal y Fflint, a&#039;r calch naill ai o Sir Fôn neu ardal y Gogarth, gan nad oedd calchfaen ar gael yn nes na hynny.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Mae olion nifer o &#039;&#039;&#039;odynau calch&#039;&#039;&#039; wedi eu dangos ar fapiau Ordnans a gyhoeddwyd tua 1889.&amp;lt;ref&amp;gt;Mapiau Ordnans 6&quot; i&#039;r filltir, golygyddiad cyntaf&amp;lt;/ref&amp;gt; Roedd y rhain i gyd ar lan y môr, a&#039;u diben oedd cynhesu calchfaen nes iddi droi&#039;n bowdwr y gellid ei daenu ar y tir i&#039;w dadasideiddio a&#039;i wneud yn fwy ffrwythlon. Mae hyn yn arfer sydd yn dyddio&#039;n ôl dros o leiaf dwy ganrif a hanner yn &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[&lt;/ins&gt;Uwchgwyrfai&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]]&lt;/ins&gt;. Roedd yr odynau ar lan y môr, a hynny ger aber neu draeth gwastad, er mwyn derbyn y galchfaen oddi ar longau. Byddai glo i gynhesu&#039;r odynau hefyd yn dod ar longau. Byddai&#039;r rhain yn llongau gyda gwaelod gweddol fflat fel y gallent ddod at y lan ar ben llanw a setlo ar y traeth wrth i&#039;r llanw fynd allan. Byddai&#039;r glo&#039;n dod naill ai o Falltraeth neu o ardal y Fflint, a&#039;r calch naill ai o Sir Fôn neu ardal y Gogarth, gan nad oedd calchfaen ar gael yn nes na hynny.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Nodir chwech o odynau ar fapiau 1889, gyda thair yn cael eu galw&amp;#039;n &amp;#039;&amp;#039;&amp;quot;old limekilns&amp;quot;&amp;#039;&amp;#039;, er na ddylid cymryd yn ganiataol bod y lleill yn dal i weithio. Mae&amp;#039;n debyg mai dal i sefyll a heb ddadfeilio oeddynt, gan fod dyfodiad y rheilffordd i Uwchgwyrfai tua 1867 wedi golygu y gellid mewnforio calch o ddwyrain Cymru&amp;#039;n rhatach, a hynny at seidins yn nes i ffermydd yr ucheldir lle oedd y mwyaf o angen am galch, gan mor asidig yw&amp;#039;r pridd yno.&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Nodir chwech o odynau ar fapiau 1889, gyda thair yn cael eu galw&amp;#039;n &amp;#039;&amp;#039;&amp;quot;old limekilns&amp;quot;&amp;#039;&amp;#039;, er na ddylid cymryd yn ganiataol bod y lleill yn dal i weithio. Mae&amp;#039;n debyg mai dal i sefyll a heb ddadfeilio oeddynt, gan fod dyfodiad y rheilffordd i Uwchgwyrfai tua 1867 wedi golygu y gellid mewnforio calch o ddwyrain Cymru&amp;#039;n rhatach, a hynny at seidins yn nes i ffermydd yr ucheldir lle oedd y mwyaf o angen am galch, gan mor asidig yw&amp;#039;r pridd yno.&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l11&quot;&gt;Llinell 11:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 11:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;−&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Erbyn 1914, nid oedd y map Ordnans yn cynnwys odynau Aberafon a Phorth Clynnog, tra bod odynau Tyddyn Hen, Tŷ Coch a Llyn-y-gele yn cael eu disgrifio fel &quot;&#039;&#039;old limekilns&#039;&#039;&quot;. Mae&#039;n debyg mai&#039;r odyn olaf i fod yn weithredol yn Uwchgwyrfai oedd Odyn y Foryd, ond disgrifir honno hyd yn oed ar y map fel odyn nad yw&#039;r gweithio, a hynny er ei bod wrth hen gei &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Ponc y &lt;/del&gt;Foryd.&amp;lt;ref&amp;gt;Map Ordnans 6&quot; i&#039;r filltir, arolwg 1914, cyhoeddwyd 1920&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;Erbyn 1914, nid oedd y map Ordnans yn cynnwys odynau Aberafon a Phorth Clynnog, tra bod odynau Tyddyn Hen, Tŷ Coch a Llyn-y-gele yn cael eu disgrifio fel &quot;&#039;&#039;old limekilns&#039;&#039;&quot;. Mae&#039;n debyg mai&#039;r odyn olaf i fod yn weithredol yn Uwchgwyrfai oedd Odyn y Foryd, ond disgrifir honno hyd yn oed ar y map fel odyn nad yw&#039;r gweithio, a hynny er ei bod wrth hen gei &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[[Y &lt;/ins&gt;Foryd&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;]]&lt;/ins&gt;.&amp;lt;ref&amp;gt;Map Ordnans 6&quot; i&#039;r filltir, arolwg 1914, cyhoeddwyd 1920&amp;lt;/ref&amp;gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Cyfeiriadau==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Cyfeiriadau==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
	<entry>
		<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15462&amp;oldid=prev</id>
		<title>Irion am 16:06, 19 Chwefror 2024</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Odynau_calch&amp;diff=15462&amp;oldid=prev"/>
		<updated>2024-02-19T16:06:06Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
				&lt;col class=&quot;diff-content&quot; /&gt;
				&lt;tr class=&quot;diff-title&quot; lang=&quot;cy&quot;&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Fersiwn hŷn&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Fersiwn yn ôl 17:06, 19 Chwefror 2024&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l10&quot;&gt;Llinell 10:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 10:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Llyn-y-gele]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *Hen odyn [[Llyn-y-gele]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;  *[[Odyn Galch a Bwthyn y Foryd|Odyn galch y Foryd]]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Erbyn 1914, nid oedd y map Ordnans yn cynnwys odynau Aberafon a Phorth Clynnog, tra bod odynau Tyddyn Hen, Tŷ Coch a Llyn-y-gele yn cael eu disgrifio fel &quot;&#039;&#039;old limekilns&#039;&#039;&quot;. Mae&#039;n debyg mai&#039;r odyn olaf i fod yn weithredol yn Uwchgwyrfai oedd Odyn y Foryd, ond disgrifir honno hyd yn oed ar y map fel odyn nad yw&#039;r gweithio, a hynny er ei bod wrth hen gei Ponc y Foryd.&amp;lt;ref&amp;gt;Map Ordnans 6&quot; i&#039;r filltir, arolwg 1914, cyhoeddwyd 1920&amp;lt;/ref&amp;gt;&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;br&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Cyfeiriadau==&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;==Cyfeiriadau==&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
</feed>