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...
Crusades; History; Council of Chalcedon (451); Christology; Dioscorus, Patriarch of Alexandria, d. 454; Islam; Jerusalem; Historians; History of the Patriarchs; Patriarchs and patriarchate; Ayyubid dynasty; Fatimid dynasty; Mamluks
Roman Empire; Byzantine Empire; Emperors--Byzantine Empire; Alexandria (Egypt); Provinces of the Roman Empire; Athanasius, Saint, Patriarch of Alexandria, d. 373.; Anthony, of Egypt, Saint, ca. 250-355 or 6; Pachomius, Saint; Shenute, ca. 348-466;...