St Gelasius I became Pope in 496, and during his four-year reign fought against paganism and heresy, writing treatises against Manicheanism, Monophysitism, and Pelagianism, among others. Some of his principles in ecclesiastical matters were taken up by the Second Vatican Council. Nov 20

St Gelasius I became Pope in 496, and during his four-year reign fought against paganism and heresy, writing treatises against Manicheanism, Monophysitism, and Pelagianism, among others. Some of his principles in ecclesiastical matters were taken up by the Second Vatican Council.  Nov 20