History of the papacy (1048–1257) Pope Urban II (1088–99) speech at the Council of Clermont in 1095 became the rallying cry of the First Crusade. Unlike the previous millennium, the process for papal selection became somewhat fixed during this period. Pope Nicholas II promulgated "In Nomine Domini" in 1059, which limited suffrage in papal elections to the College of Cardinals. The rules and procedures of papal elections evolved during this period, laying the groundwork for the modern papal conclave. The driving force behind these reforms was Cardinal Hildebrand, who later became Gregory VII. The Investiture Controversy was the most significant conflict between secular and religious
Simon II of Clermont-Nesle king engaged the best available lawyers for his case. The conflict led in 1309 to the moving of the Papal court, under Pope Clement V (c. 1264–1314), to Avignon, outside the king's realm. Simon was a son of Simon II of Clermont, Seigneur of Ailly, Maulette and Nesle (c. 1216–1286) by Adele of Montfort (d. 1279), daughter of Amaury VI of Montfort. The father was a counsellor of King "Saint" Louis IX of France and was appointed regent ("lieutenant") while the king went away on the Seventh Crusade. Simon had three brothers and at least one sister, whose son was