A figurehead of this movement was preacher William Williams, or William ‘Pantycelyn’ — his name inspired by his former home and now-listed farmhouse.
Un o brif ffigurau’r mudiad hwn oedd y pregethwr William Williams, neu Williams ‘Pantycelyn’ — fe’i llysenwyd ar ôl ei hen gartref a’r ffermdy sydd bellach yn rhestredig.