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	<id>https://cof.canolfanuwchgwyrfai.cymru/index.php?action=history&amp;feed=atom&amp;title=Simon_McPherson</id>
	<title>Simon McPherson - Hanes golygu</title>
	<link rel="self" type="application/atom+xml" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?action=history&amp;feed=atom&amp;title=Simon_McPherson"/>
	<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Simon_McPherson&amp;action=history"/>
	<updated>2026-05-06T18:49:27Z</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=Simon_McPherson&amp;diff=13044&amp;oldid=prev</id>
		<title>Cyfaill Eben am 15:21, 28 Chwefror 2022</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Simon_McPherson&amp;diff=13044&amp;oldid=prev"/>
		<updated>2022-02-28T15:21:22Z</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 16:21, 28 Chwefror 2022&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-l3&quot;&gt;Llinell 3:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 3:&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;Rheolwr chwareli ithfaen oedd &amp;#039;&amp;#039;&amp;#039;Simon McPherson&amp;#039;&amp;#039;&amp;#039; (c1877-1957).&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;Rheolwr chwareli ithfaen oedd &amp;#039;&amp;#039;&amp;#039;Simon McPherson&amp;#039;&amp;#039;&amp;#039; (c1877-1957).&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 McPherson yn rheolwr Chwareli ithfaen [[Chwarel Tyddyn Hywel|Tyddyn Hywel]] a [[Chwarel Tan-y-graig|Than-y-graig]] rhwng [[Clynnog Fawr]] a phentref [[Trefor]] ar lethrau gogleddol Gurn Ddu rhwng 1909 a 1922.&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 McPherson yn rheolwr Chwareli ithfaen [[Chwarel Tyddyn Hywel|Tyddyn Hywel]] a [[Chwarel Tan-y-graig|Than-y-graig]]&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;, &lt;/ins&gt;rhwng [[Clynnog Fawr]] a phentref [[Trefor]]&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;, &lt;/ins&gt;ar lethrau gogleddol Gurn Ddu&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;, &lt;/ins&gt;rhwng 1909 a 1922.&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;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Yn &lt;/del&gt;1917 fe &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;alwodd &lt;/del&gt;gyfarfod yng ngwesty Tywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;benodwyd &lt;/del&gt;yn &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Ysgrifenydd &lt;/del&gt;Cyffredinol. &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Dyma &lt;/del&gt;yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Y Diwydiant Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), Canolfan Genedlaethol Cerrig , (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenydd.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&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;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Ym &lt;/ins&gt;1917 fe &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;drefnodd &lt;/ins&gt;gyfarfod yng ngwesty Tywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;penodwyd &lt;/ins&gt;yn &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Ysgrifennydd &lt;/ins&gt;Cyffredinol &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;iddo&lt;/ins&gt;. &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Hwn &lt;/ins&gt;yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Y Diwydiant Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), Canolfan Genedlaethol Cerrig , (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenydd.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&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;Ar ei farwolaeth ym 1957 fe &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;olynwyd &lt;/del&gt;yn ysgrifennydd cyffredinol y Sefydliad gan ei fab.  &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;Ar ei farwolaeth ym 1957 fe&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;&#039;i holynwyd &lt;/ins&gt;yn ysgrifennydd cyffredinol y Sefydliad gan ei fab.  &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;{{eginyn}}&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;{{eginyn}}&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=Simon_McPherson&amp;diff=5605&amp;oldid=prev</id>
		<title>Irion am 10:00, 11 Ebrill 2019</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Simon_McPherson&amp;diff=5605&amp;oldid=prev"/>
		<updated>2019-04-11T10:00:24Z</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 11:00, 11 Ebrill 2019&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-l17&quot;&gt;Llinell 17:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 17:&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;[[Categori:Pobl]]&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;[[Categori:Pobl]]&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;[[Categori:Chwarelydda]]&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;[[Categori:Chwarelydda]]&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;[[Categori:&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Rheolwyr ac asiantwyr &lt;/del&gt;chwareli]]&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;[[Categori:&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Asiantwyr a rheolwyr &lt;/ins&gt;chwareli]]&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=Simon_McPherson&amp;diff=5604&amp;oldid=prev</id>
		<title>Irion am 09:58, 11 Ebrill 2019</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Simon_McPherson&amp;diff=5604&amp;oldid=prev"/>
		<updated>2019-04-11T09:58:33Z</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 10:58, 11 Ebrill 2019&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-l3&quot;&gt;Llinell 3:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 3:&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;Rheolwr chwareli ithfaen oedd &amp;#039;&amp;#039;&amp;#039;Simon McPherson&amp;#039;&amp;#039;&amp;#039; (c1877-1957).&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;Rheolwr chwareli ithfaen oedd &amp;#039;&amp;#039;&amp;#039;Simon McPherson&amp;#039;&amp;#039;&amp;#039; (c1877-1957).&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 McPherson yn rheolwr Chwareli ithfaen [[Chwarel &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ithfaen &lt;/del&gt;Tyddyn Hywel|Tyddyn Hywel]] a [[Chwarel &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ithfaen &lt;/del&gt;Tan-y-graig|Than-y-graig]] rhwng [[Clynnog Fawr]] a phentref [[Trefor]] ar lethrau gogleddol Gurn Ddu rhwng 1909 a 1922.&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 McPherson yn rheolwr Chwareli ithfaen [[Chwarel Tyddyn Hywel|Tyddyn Hywel]] a [[Chwarel Tan-y-graig|Than-y-graig]] rhwng [[Clynnog Fawr]] a phentref [[Trefor]] ar lethrau gogleddol Gurn Ddu rhwng 1909 a 1922.&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;Yn 1917 fe alwodd gyfarfod yng ngwesty Tywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&amp;#039;&amp;#039;Institute of Quarrying&amp;#039;&amp;#039; neu &amp;#039;&amp;#039;IoQ&amp;#039;&amp;#039; ), ac fe&amp;#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &amp;#039;&amp;#039;Y Diwydiant Chwarelydda yng Nghymru&amp;#039;&amp;#039; (dwyieithog), Canolfan Genedlaethol Cerrig , (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&amp;#039;i enwi&amp;#039;n McPherson House i anrhydeddu ei sylfaenydd.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&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;Yn 1917 fe alwodd gyfarfod yng ngwesty Tywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&amp;#039;&amp;#039;Institute of Quarrying&amp;#039;&amp;#039; neu &amp;#039;&amp;#039;IoQ&amp;#039;&amp;#039; ), ac fe&amp;#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &amp;#039;&amp;#039;Y Diwydiant Chwarelydda yng Nghymru&amp;#039;&amp;#039; (dwyieithog), Canolfan Genedlaethol Cerrig , (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&amp;#039;i enwi&amp;#039;n McPherson House i anrhydeddu ei sylfaenydd.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&amp;lt;/ref&amp;gt;&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-l17&quot;&gt;Llinell 17:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 17:&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;[[Categori:Pobl]]&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;[[Categori:Pobl]]&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;[[Categori:Chwarelydda]]&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;[[Categori:Chwarelydda]]&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;[[Categori:Rheolwyr ac asiantwyr chwareli]]&lt;/ins&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=Simon_McPherson&amp;diff=3556&amp;oldid=prev</id>
		<title>Irion am 16:57, 5 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Simon_McPherson&amp;diff=3556&amp;oldid=prev"/>
		<updated>2018-06-05T16:57:10Z</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 17:57, 5 Mehefin 2018&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-l5&quot;&gt;Llinell 5:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 5:&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;Roedd McPherson yn rheolwr Chwareli ithfaen [[Chwarel ithfaen Tyddyn Hywel|Tyddyn Hywel]] a [[Chwarel ithfaen Tan-y-graig|Than-y-graig]] rhwng [[Clynnog Fawr]] a phentref [[Trefor]] ar lethrau gogleddol Gurn Ddu rhwng 1909 a 1922.&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;Roedd McPherson yn rheolwr Chwareli ithfaen [[Chwarel ithfaen Tyddyn Hywel|Tyddyn Hywel]] a [[Chwarel ithfaen Tan-y-graig|Than-y-graig]] rhwng [[Clynnog Fawr]] a phentref [[Trefor]] ar lethrau gogleddol Gurn Ddu rhwng 1909 a 1922.&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;Yn 1917 fe alwodd gyfarfod yng ngwesty Tywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Y Diwydiant Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), Canolfan Genedlaethol Cerrig , (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;sylfaenwr&lt;/del&gt;.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&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;Yn 1917 fe alwodd gyfarfod yng ngwesty Tywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Y Diwydiant Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), Canolfan Genedlaethol Cerrig , (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;sylfaenydd&lt;/ins&gt;.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&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;Ar ei farwolaeth ym 1957 fe olynwyd yn ysgrifennydd cyffredinol y Sefydliad gan ei fab.  &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;Ar ei farwolaeth ym 1957 fe olynwyd yn ysgrifennydd cyffredinol y Sefydliad gan ei fab.  &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=Simon_McPherson&amp;diff=3555&amp;oldid=prev</id>
		<title>Irion am 16:56, 5 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Simon_McPherson&amp;diff=3555&amp;oldid=prev"/>
		<updated>2018-06-05T16:56:47Z</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 17:56, 5 Mehefin 2018&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-l5&quot;&gt;Llinell 5:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 5:&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;Roedd McPherson yn rheolwr Chwareli ithfaen [[Chwarel ithfaen Tyddyn Hywel|Tyddyn Hywel]] a [[Chwarel ithfaen Tan-y-graig|Than-y-graig]] rhwng [[Clynnog Fawr]] a phentref [[Trefor]] ar lethrau gogleddol Gurn Ddu rhwng 1909 a 1922.&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;Roedd McPherson yn rheolwr Chwareli ithfaen [[Chwarel ithfaen Tyddyn Hywel|Tyddyn Hywel]] a [[Chwarel ithfaen Tan-y-graig|Than-y-graig]] rhwng [[Clynnog Fawr]] a phentref [[Trefor]] ar lethrau gogleddol Gurn Ddu rhwng 1909 a 1922.&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;Yn 1917 fe alwodd gyfarfod yng ngwesty Tywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Y Diwydiant Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Y Ganolfan &lt;/del&gt;Cerrig &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Genedlaethol&lt;/del&gt;, (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&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;Yn 1917 fe alwodd gyfarfod yng ngwesty Tywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Y Diwydiant Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Canolfan Genedlaethol &lt;/ins&gt;Cerrig , (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&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;Ar ei farwolaeth ym 1957 fe olynwyd yn ysgrifennydd cyffredinol y Sefydliad gan ei fab.  &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;Ar ei farwolaeth ym 1957 fe olynwyd yn ysgrifennydd cyffredinol y Sefydliad gan ei fab.  &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=Simon_McPherson&amp;diff=3551&amp;oldid=prev</id>
		<title>Irion am 16:53, 5 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Simon_McPherson&amp;diff=3551&amp;oldid=prev"/>
		<updated>2018-06-05T16:53:15Z</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 17:53, 5 Mehefin 2018&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-l5&quot;&gt;Llinell 5:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 5:&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;Roedd McPherson yn rheolwr Chwareli ithfaen [[Chwarel ithfaen Tyddyn Hywel|Tyddyn Hywel]] a [[Chwarel ithfaen Tan-y-graig|Than-y-graig]] rhwng [[Clynnog Fawr]] a phentref [[Trefor]] ar lethrau gogleddol Gurn Ddu rhwng 1909 a 1922.&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;Roedd McPherson yn rheolwr Chwareli ithfaen [[Chwarel ithfaen Tyddyn Hywel|Tyddyn Hywel]] a [[Chwarel ithfaen Tan-y-graig|Than-y-graig]] rhwng [[Clynnog Fawr]] a phentref [[Trefor]] ar lethrau gogleddol Gurn Ddu rhwng 1909 a 1922.&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;Yn 1917 fe alwodd gyfarfod yng &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ngwestyTywysog &lt;/del&gt;Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Y Diwydiant Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), Y Ganolfan Cerrig Genedlaethol, (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&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;Yn 1917 fe alwodd gyfarfod yng &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;ngwesty Tywysog &lt;/ins&gt;Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;Y Diwydiant Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), Y Ganolfan Cerrig Genedlaethol, (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&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;Ar ei farwolaeth ym 1957 fe olynwyd yn ysgrifennydd cyffredinol y Sefydliad gan ei fab.  &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;Ar ei farwolaeth ym 1957 fe olynwyd yn ysgrifennydd cyffredinol y Sefydliad gan ei fab.  &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=Simon_McPherson&amp;diff=3535&amp;oldid=prev</id>
		<title>Irion am 09:11, 4 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Simon_McPherson&amp;diff=3535&amp;oldid=prev"/>
		<updated>2018-06-04T09:11:35Z</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 10:11, 4 Mehefin 2018&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-l5&quot;&gt;Llinell 5:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 5:&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;Roedd McPherson yn rheolwr Chwareli ithfaen [[Chwarel ithfaen Tyddyn Hywel|Tyddyn Hywel]] a [[Chwarel ithfaen Tan-y-graig|Than-y-graig]] rhwng [[Clynnog Fawr]] a phentref [[Trefor]] ar lethrau gogleddol Gurn Ddu rhwng 1909 a 1922.&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;Roedd McPherson yn rheolwr Chwareli ithfaen [[Chwarel ithfaen Tyddyn Hywel|Tyddyn Hywel]] a [[Chwarel ithfaen Tan-y-graig|Than-y-graig]] rhwng [[Clynnog Fawr]] a phentref [[Trefor]] ar lethrau gogleddol Gurn Ddu rhwng 1909 a 1922.&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;Yn 1917 fe alwodd gyfarfod yng ngwestyTywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;YDiwydiant &lt;/del&gt;Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), Y Ganolfan Cerrig Genedlaethol, (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&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;Yn 1917 fe alwodd gyfarfod yng ngwestyTywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Y Diwydiant &lt;/ins&gt;Chwarelydda yng Nghymru&#039;&#039; (dwyieithog), Y Ganolfan Cerrig Genedlaethol, (Wirksworth, 2014)&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&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;Ar ei farwolaeth ym 1957 fe olynwyd yn ysgrifennydd cyffredinol y Sefydliad gan ei fab.  &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;Ar ei farwolaeth ym 1957 fe olynwyd yn ysgrifennydd cyffredinol y Sefydliad gan ei fab.  &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=Simon_McPherson&amp;diff=3534&amp;oldid=prev</id>
		<title>Irion am 09:11, 4 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Simon_McPherson&amp;diff=3534&amp;oldid=prev"/>
		<updated>2018-06-04T09:11:19Z</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 10:11, 4 Mehefin 2018&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-l5&quot;&gt;Llinell 5:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Llinell 5:&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;Roedd McPherson yn rheolwr Chwareli ithfaen [[Chwarel ithfaen Tyddyn Hywel|Tyddyn Hywel]] a [[Chwarel ithfaen Tan-y-graig|Than-y-graig]] rhwng [[Clynnog Fawr]] a phentref [[Trefor]] ar lethrau gogleddol Gurn Ddu rhwng 1909 a 1922.&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;Roedd McPherson yn rheolwr Chwareli ithfaen [[Chwarel ithfaen Tyddyn Hywel|Tyddyn Hywel]] a [[Chwarel ithfaen Tan-y-graig|Than-y-graig]] rhwng [[Clynnog Fawr]] a phentref [[Trefor]] ar lethrau gogleddol Gurn Ddu rhwng 1909 a 1922.&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;Yn 1917 fe alwodd gyfarfod yng ngwestyTywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;Chwareli Cymru&lt;/del&gt;&#039;&#039; &lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;[I&#039;w gadarnhau]&lt;/del&gt;&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&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;Yn 1917 fe alwodd gyfarfod yng ngwestyTywysog Cymru yng Nghaernarfon, pan benderfynwyd sefydlu corff a ddatblygodd yn fuan fel [[Y Sefydliad Chwarelydda]] (&#039;&#039;Institute of Quarrying&#039;&#039; neu &#039;&#039;IoQ&#039;&#039; ), ac fe&#039;i benodwyd yn Ysgrifenydd Cyffredinol. Dyma yw corff proffesiynol peirianwyr ac arbenigwyr chwarelydda ym Mhrydain Fawr hyd heddiw, gyda changhennau mewn sawl man yn y byd.&amp;lt;ref&amp;gt;Ian Thomas, &#039;&#039;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;YDiwydiant Chwarelydda yng Nghymru&lt;/ins&gt;&#039;&#039; &lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;(dwyieithog), Y Ganolfan Cerrig Genedlaethol, (Wirksworth, 2014)&lt;/ins&gt;&amp;lt;/ref&amp;gt; Cododd y Sefydliad bencadlys newydd ym 1912 yn Chilwell, Swydd Nottingham a&#039;i enwi&#039;n McPherson House i anrhydeddu ei sylfaenwr.&amp;lt;ref&amp;gt;Tudalen IoQ ar Wikipedia [https://en.wikipedia.org/wiki/Institute_of_Quarrying]&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;Ar ei farwolaeth ym 1957 fe olynwyd yn ysgrifennydd cyffredinol y Sefydliad gan ei fab.  &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;Ar ei farwolaeth ym 1957 fe olynwyd yn ysgrifennydd cyffredinol y Sefydliad gan ei fab.  &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=Simon_McPherson&amp;diff=3533&amp;oldid=prev</id>
		<title>Irion am 09:06, 4 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Simon_McPherson&amp;diff=3533&amp;oldid=prev"/>
		<updated>2018-06-04T09:06:01Z</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 10:06, 4 Mehefin 2018&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;[[Delwedd:McPhersonIoQ.jpg|bawd|300px|&lt;del style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;dePortread &lt;/del&gt;gan Simon Elwes, RA]]&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;[[Delwedd:McPhersonIoQ.jpg|bawd|300px|&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;de|Portread &lt;/ins&gt;gan Simon Elwes, RA]]&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;Rheolwr chwareli ithfaen oedd &amp;#039;&amp;#039;&amp;#039;Simon McPherson&amp;#039;&amp;#039;&amp;#039; (c1877-1957).&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;Rheolwr chwareli ithfaen oedd &amp;#039;&amp;#039;&amp;#039;Simon McPherson&amp;#039;&amp;#039;&amp;#039; (c1877-1957).&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=Simon_McPherson&amp;diff=3532&amp;oldid=prev</id>
		<title>Irion am 09:05, 4 Mehefin 2018</title>
		<link rel="alternate" type="text/html" href="https://cof.canolfanuwchgwyrfai.cymru/index.php?title=Simon_McPherson&amp;diff=3532&amp;oldid=prev"/>
		<updated>2018-06-04T09:05:10Z</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 10:05, 4 Mehefin 2018&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 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;[[Delwedd:McPhersonIoQ.jpg|bawd|300px|dePortread gan Simon Elwes, RA]]&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;&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;Rheolwr chwareli ithfaen oedd &amp;#039;&amp;#039;&amp;#039;Simon McPherson&amp;#039;&amp;#039;&amp;#039; (c1877-1957).&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;Rheolwr chwareli ithfaen oedd &amp;#039;&amp;#039;&amp;#039;Simon McPherson&amp;#039;&amp;#039;&amp;#039; (c1877-1957).&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;/table&gt;</summary>
		<author><name>Irion</name></author>
	</entry>
</feed>