अर्थ : (Roman Catholic Church) a church father known for his constant fight against perceived heresies. A saint and Doctor of the Church (329-391).

अर्थ : Italian pope from 1831 to 1846. Conservative in politics and theology. Worked to propagate Catholicism in England and the United States (1765-1846).

अर्थ : The pope who sponsored the introduction of the modern calendar (1572-1585).

अर्थ : The Italian pope from 1406 to 1415 who worked to end the Great Schism and who retired to make it possible (1327-1417).

अर्थ : The Italian pope who fought to establish the supremacy of the pope over the Roman Catholic Church and the supremacy of the church over the state (1020-1085).

अर्थ : (Roman Catholic Church) an Italian pope distinguished for his spiritual and temporal leadership. A saint and Doctor of the Church (540?-604).