Master of the German-speaking Palatine school at Ballingrane. He was one of six preachers received by John Wesley at the first Irish Conference in Limerick (1752). He never itinerated, but as class leader and local preacher became spiritual father to the infant society at Limerick and neighbouring Palatine settlements, among whom he is credited with upholding high moral standards when they had no other pastoral care. His most notable pupils were Philip Embury, a pioneer of New York Methodism, and Thomas Walsh. It was said that, even a century after his death, locals would say of the Methodist itinerants, 'There goes Philip Guier who drove the Devil out of Ballingrane.'