On the last Sunday in April Rev. John Thomas Job preached here (I guess), bring the Revival from Bethesda. In the evening he never got to preach, because (according to his diary), the place was awash with repentant tears as the people were brought through the valley of conviction of sin to a place of praise.
To find out more about the Bethesda Revival see 'When God came to North Wales', published by Quinta Press 2010.