Roman Catholic Church; Patriarchs and patriarchate; Alexandria (Egypt); Dioscorus, Patriarch of Alexandria, d. 454; Rome (Italy); Saints; Augustine, Saint, Bishop of Hippo; Archdeacons; Cyril, of Alexandria, Saint, ca. 370-444; Nestorians;...
Roman Empire; Byzantine Empire; Christianity; Emperors--Byzantine Empire; Diocletian, Emperor of Rome, 245-313; Eusebius, of Caesarea, Bishop of Caesarea, ca. 260- ca. 340; Heresy; Persecution; Arius; Arians; Arianism; Athanasius, Saint, Patriarch...