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(Encyclopedia)Peter IV (Peter the Ceremonious), 1319?–1387, king of Aragón and count of Barcelona (1336–87); son and successor of Alfonso IV. He supported Alfonso XI of Castile at the battle of Tarifa (1340), ...

Peter IV, king of Portugal

(Encyclopedia)Peter IV, king of Portugal: see Pedro I, emperor of Brazil. ...

Alexius V

(Encyclopedia)Alexius V (Alexius Ducas Mourtzouphlos) do͞oˈkəsmo͝ortˈso͞oflŏs [key], d. 1204, Byzantine emperor (1204), son-in-law of Alexius III. The head of the Byzantine national party, he overthrew emper...

Zoë

(Encyclopedia)Zoë zōˈē [key], c.978–1050, Byzantine empress (1028–50), daughter and successor of Constantine VIII. Zoë was first married when she was 50 years old at the request of her father to insure sta...

Cantacuzene, John

(Encyclopedia)Cantacuzene, John: see John VI, Byzantine emperor. ...

Henry IV, Holy Roman emperor and German king

(Encyclopedia)Henry IV, 1050–1106, Holy Roman emperor (1084–1105) and German king (1056–1105), son and successor of Henry III. He was the central figure in the opening stages of the long struggle between the ...

Andronicus III

(Encyclopedia)Andronicus III (Andronicus Palaeologus), c.1296–1341, Byzantine emperor (1328–41), grandson of Andronicus II, whom he deposed after a series of civil wars. His chief minister was John Cantacuzene ...

John of Brienne

(Encyclopedia)John of Brienne brēĕnˈ [key], c.1170–1237, French crusader. He was a count and in 1210 married Mary, titular queen of Jerusalem. Mary died in 1212, and their daughter, Yolande (1212–28), succee...

Romanus IV

(Encyclopedia)Romanus IV (Romanus Diogenes) dīŏjˈənēz [key], d. 1072, Byzantine emperor (1068–71). A Cappadocian general, he succeeded Constantine X by marrying his widow, Eudocia Macrembolitissa. After some...