Guilliaume de Montfort He fought in the First Crusade, but was killed there in battle on 27 August 1101. Guilliaume de Montfort Guilliaume de Montfort () (died 27 August 1101) was a French bishop, most notably the Bishop of Paris from 1095 to 1101. Montfort's date of birth is not known, but it was some time before the death of his father, Simon I de Montfort in 1087. He was Bishop of Yves some time before becoming the Bishop of Paris. In 1095, Pope Urban II held the Council of Clermont at Clermont-Ferrand, France. It excommunicated Philip I of France and Bertrade de
Roman Catholic Archdiocese of Clermont Aquitaine by Pope John XXII, resulting in the creation of the diocese of Saint-Flour. In 1822, in the reorganization of French dioceses by Pope Pius VII, following the restoration of the Bourbon monarchy, the diocese of Clermont lost the Bourbonnais, on account of the erection of the diocese of Moulins. Since the reorganization in 2002 by Pope John Paul II, there are now four dioceses in the Province of Clermont: Clermont, Le Puy-en-Velay, Moulins, and Saint-Flour. The first Bishop of Clermont was Saint Austremonius (Stramonius). According to local tradition he was one of the seventy-two Disciples of Christ, by birth