Diwygiad Cwm Coryn

Cychwynnodd diwygiad yng Capel cwm Coryn ym 1831. Mae Robert Hughes, Uwchlaw'rffynnon yn cofnodi'r digwyddiad yn ei hunangofiant. 1831 Cwmcoryn ‘In the month of November, in that year, 1832 [1831], the most powerful revival that was seen in the last sixty years broke out... The revival broke out in Cwmcoryn when we were not expecting it. Thomas Pritchard, y Nant, had been announced as preaching there one evening. He was not known as a remarkable revivalist. But he never came to fulfill the engagement, and therefore a prayer meeting was held, when something so powerful descended which resulted in rejoicing throughout the place, the majority of whom were old members and some who were not members.