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 Diocese of Le Puy-en-Velay to the Bishops of Le Puy, also granting them the right, until then reserved to archbishops exclusively of wearing the pallium. "Nowhere", he said in his Bull, "does the Blessed Virgin receive a more special and more filial worship." It was from Le Puy that Pope Urban II dated (15 August 1095) the Letters Apostolic convoking the Council of Clermont, and it was a canon of Le Puy, Raymond d'Aiguilles, chaplain to the Count of Toulouse, who wrote the history of the crusade. Pope Gelasius II, Pope Callistus II, Pope Innocent II and Pope Alexander III visited Le Puy to