Baldwin I of Jerusalem fought for their brother, Godfrey of Bouillon, against Albert III, Count of Namur and Theoderic, Bishop of Verdun at Stenay in 1086. The childless Godfrey, who became duke of Lower Lotharingia in 1087, mentioned Baldwin in most of his charters of grant, indicating that Baldwin was regarded as his heir. Baldwin regularly visited the fortress of his wife's family at Conches-en-Ouche. Pope Urban II proclaimed the First Crusade at the Council of Clermont on 27November 1095. Godfrey of Bouillon decided to join the military campaign and sold or mortgaged his inherited domains to raise funds. One of his domains, the
Primate of the Gauls that the Church of Lyons had enjoyed this privilege "per annorum longa curriccula". His intent was to reduce the power of the Archbishop of Sens, but the pope also limits the powers of the tital itself, the holder is not a court of appeal, and he no longer holds the apostolic vicariate. The primacy of Lyon is challenged regularly, and at the Council of Clermont of 1 December 1095, Pope Urban II again confirms the privileges of Lyon and declares that the Archbishop of Sens had to be in submission and obedience to the primate. It was only in 1516