Byzantium: Emperors *. Leo I, Byzantine or East Roman emperor (457–74) *. Justin I, Byzantine emperor (518–27) *. Justinian I, Byzantine emperor (527–65) *. Theodora, Byzantine empress (527–48) *. Justin II, Byzantine emperor (565–78) *. Maurice, Byzantine emperor (582–602) *. Heraclius, Byzantine emperor (610–41) *. Constans II, Byzantine emperor (641–68) *. Constantine IV, Byzantine emperor (668–85) *. Justinian II, Byzantine emperor (685–95, 705–11) *. Leo III, Byzantine emperor (717–41) *. Constantine V, Byzantine emperor (741–75) *. Leo IV, Byzantine emperor (775–80) *. Constantine VI, Byzantine emperor (780–97) *. Irene, Byzantine empress (797–802) *. Nicephorus I, Byzantine emperor (802–11) *. Michael I, Byzantine emperor (811–13) *. Leo V, Byzantine emperor (813–20) *. Michael II, Byzantine emperor (820–29) *. Michael III, Byzantine emperor (842–67) *. Basil I, Byzantine emperor (867–86) *. Leo VI, Byzantine emperor (886–912) *. Constantine VII, Byzantine emperor (913–59) *. Romanus I, Byzantine emperor (usurper) (920–44) *. Romanus II, Byzantine emperor (959–63) *. Nicephorus II (Nicephorus Phocas), Byzantine emperor (963–69) *. John I (John Tzimisces), Byzantine emperor (969–76) *. Basil II, Byzantine emperor (976–1025) *. Romanus III (Romanus Argyrus), Byzantine emperor (1028–34) *. Zoë, Byzantine empress (1028–50) *. Comnenus, family name of several Byzantine emperors in the 11th and 12th centuries *. Isaac I (Isaac Comnenus), Byzantine emperor (1057–59), first of the Comneni dynasty *. Romanus IV (Romanus Diogenes), Byzantine emperor (1068–71) *. Alexius I (Alexius Comnenus), Byzantine emperor (1081–1118) *. John II (John Comnenus), Byzantine emperor (1118–43) *. Manuel I (Manuel Comnenus), Byzantine emperor (1143–80) *. Alexius II, Byzantine emperor (1180–83) *. Andronicus I (Andronicus Comnenus), Byzantine emperor (1183–85) *. Isaac II (Isaac Angelus), Byzantine emperor (1185–95, 1203–04) *. Alexius III (Alexius Angelus), Byzantine emperor (1195–1203) *. Alexius IV, Byzantine emperor (1203–04) *. Alexius V (Alexius Ducas Mourtzouphlos), Byzantine emperor (1204) *. Baldwin I, first Latin emperor of Constantinople (1204–05) *. Theodore I, Byzantine emperor of Nicaea (1204–22) *. Robert of Courtenay, Latin emperor of Constantinople (1218–28) *. John III (John Ducas Vatatzes), Byzantine emperor of Nicaea (1222–54) *. Theodore II, Byzantine emperor of Nicaea (1254–58) *. Baldwin II, last Latin emperor of Constantinople (1228–61) *. John IV (John Lascaris), Byzantine emperor of Nicaea (1258–61) *. Michael VIII, Byzantine emperor (1261–82), first of the Palaeologusdynasty *. Andronicus II (Andronicus Palaeologus), Byzantine emperor (1282–1328) *. Andronicus III, Byzantine emperor (1328–41) *. John V (John Palaeologus), Byzantine emperor (1341–91) *. John VI (John Cantacuzene), Byzantine emperor (1347–54) *. John VII (John Palaeologus), Byzantine emperor (1390, 1399–1402) *. Manuel II, Byzantine emperor (1391–1425) *. John VIII, Byzantine emperor (1425–48) *. Constantine XI, last Byzantine emperor (1449–53)