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
Pope Nicholas II Pope Nicholas II Pope Nicholas II (; c. 990/995 – 27 July 1061), born Gérard de Bourgogne, was pope from 24 January 1059 until his death. At the time of his election, he was Bishop of Florence. Gérard de Bourgogne was born in Chevron, in what is now Savoy. He was canon at Liege. In 1046 he became Bishop of Florence, where he restored the canonical life among the clergy of numerous churches. Benedict X was elected in 1058, his election having been arranged by the Count of Tusculum. However, a number of cardinals alleged that the election was irregular,