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John VI, Byzantine emperor

(Encyclopedia)John VI (John Cantacuzene) kănˌtəkyo͞ozēnˈ [key], c.1292–1383, Byzantine emperor (1347–54). He was chief minister under Andronicus III, after whose death he proclaimed himself emperor and ma...

John VII, Byzantine emperor

(Encyclopedia)John VII (John Palaeologus) pāˌlēŏlˈəgəs [key], c.1370–1408, Byzantine emperor, grandson of John V. Backed by the sultan Beyazid I, he usurped (1390) the throne from John V but was dethroned ...

John VIII, Byzantine emperor

(Encyclopedia)John VIII (John Palaeologus), 1390–1448, Byzantine emperor (1425–48), son and successor of Manuel II. When he acceded, the Byzantine Empire had been reduced by the Turks to the city of Constantino...

Orkhan

(Encyclopedia)Orkhan ôr-khänˈ [key], 1288?–1362?, Ottoman sultan (1326–1362?), son and successor of Osman I as leader of the Ottoman Turks. He defeated Byzantine Emperor Andronicus III and conquered large pa...

Maurice, Byzantine emperor

(Encyclopedia)Maurice môrˈĭs [key], c.539–602, Byzantine emperor (582–602). He was a successful general when, on his deathbed, Tiberius II, his father-in-law and the successor of Justin II, proclaimed him em...

Alexius III

(Encyclopedia)Alexius III (Alexius Angelus) ănˈjələs [key], d. after 1210, Byzantine emperor (1195–1203). He acceded to power by deposing and blinding his brother Isaac II. This act served as pretext for the ...

Constantine VI, Byzantine emperor

(Encyclopedia)Constantine VI, b. c.770, Byzantine emperor (780–97), son and successor of Leo IV. His mother, Irene, was regent until 790, when she was deposed by a military revolt. Constantine recalled her in 792...

John IV, king of Portugal

(Encyclopedia)John IV, 1604–56, king of Portugal (1640–56). He succeeded as duke of Braganza in 1630. Descended from Manuel I and in illegitimate line from John I, he had the strongest claim to the Portuguese t...

Charles IV, Holy Roman emperor

(Encyclopedia)Charles IV, 1316–78, Holy Roman emperor (1355–78), German king (1347–78), and king of Bohemia (1346–78). The son of John of Luxemburg, Charles was educated at the French court and fought the E...

Otto IV, Holy Roman emperor

(Encyclopedia)Otto IV, 1175?–1218, Holy Roman emperor (1209–15) and German king, son of Henry the Lion, duke of Saxony. He was brought up at the court of his uncle King Richard I of England, who secured his ele...