Easter; Holidays; Tradition; Liturgies; Churches; Calendar; Polycarp, Saint, Bishop of Smyrna; Rome (Italy); Alexandria (Egypt); Society and Church; Council of Nicaea (1st: 325); Cyril, of Alexandria, Saint, ca. 370-444
Byzantine Empire; Emperors--Byzantine Empire; Justinian I, Emperor of the East, 483?-565; Patriarchs and patriarchate; Council of Chalcedon (451); Melchite Church; Coptic Church; Theodore, of Mopsuestia, Bishop, ca. 350- 428 or 9; Nestorians;...