Ciscertian bishop, also called William of Dongeon. He was born at Nevers, France, and studied under his uncle, Peter, the archdeacon of Soissons, before receiving ordination and appointment as a cannon of Soissons. He helpd the same post in Paris adn then entered the monastery of Grandmont, transferring to the Cistercian community at Pontigny. In succeeding years, he was abbot of Fontaine-Jean, in Sens; abbot of Chalis, near Senlis; and bishop of Bourges, receiving consecration in 1200. The last office he was compelled to take at the behest of Pope Innocent III (r. 1198-1216). As bishop, he distinguished himself by his austerities, concern for the poor, the defense of the rights of the Church against the French crown, and his success in converting many members of the Albigensian heresy. He was canonized by Pope Honorius III (r. 1216-1227).
(Taken from Our Sunday Visitor's Encyclopedia of Saints)