William Pinchon

Guillaume Pinchon (c. 1175 – 29 July 1234) was a French Catholic prelate who served as the Bishop of Saint-Brieuc from his appointment in 1220 until his death. He was a champion for the poor and defended the rights and privileges of the Church against secular intervention though this was a cause for his exile from his diocese. He returned not long after his exile and set himself on the construction of a new cathedral which was still in construction at the time he died. 

Patron saint of Diocese of Saint-Brieuc