Jean Gerson (1363–1429)

Chancellor of the University of Paris and mystical theologian. Jean Charlier de Gerson was a French Roman Catholic scholar, educator, reformer, and poet, Chancellor of the University of Paris, a guiding influence of the conciliar movement and one of the most prominent theologians at the Council of Constance. He was one of the first thinkers to develop what would later come to be called natural rights theory, and was also one of the first individuals to defend Joan of Arc and proclaim her supernatural vocation as authentic.