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
Erlembald had to ceded his rights in Milan to Pope Gregory VII. Gregory confirmed Atto and lent his support to Erlembald. At this, the height of his power, an unfortunate fire broke out in the city and was interpreted as divine punishment for supporting the controversial "pataria". The opposition factions in Milan signed a pact against Erlembald. He put down the revolt, but was killed in the battle and buried in S. Celso. From 6 to 26 May in 1095, Pope Urban II was present at Milan for the transferral of the relics of the canonised Erlembald to S. Dionigi. He