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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...

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...

Honorius II

(Encyclopedia)Honorius II, d. 1130, pope (1124–30), an Italian named Lamberto, b. Bologna; successor of Calixtus II. Before becoming pope he spent several years in Germany adjusting the quarrel over investiture b...

Constans I

(Encyclopedia)Constans I kŏnˈstănz [key], b. 320 or 323, d. 350, Roman emperor, youngest son of Constantine I. At his father's death in 337 he received Italy and Africa as well as Pannonia and Dacia, while his b...

Muhammad II, Ottoman sultan

(Encyclopedia)Muhammad II or Mehmet II (Muhammad the Conqueror), 1429–81, Ottoman sultan (1451–81), son and successor of Murad II. He is considered the true founder of the Ottoman Empire (Turkey). He completed ...

emperor

(Encyclopedia)emperor [Lat. imperator=one holding supreme power, especially applied to generals], the sovereign head of an empire. In the Roman republic the term imperator referred to the chief military commander a...

Rudolf II

(Encyclopedia)Rudolf II, 1552–1612, Holy Roman emperor (1576–1612), king of Bohemia (1575–1611) and of Hungary (1572–1608), son and successor of Holy Roman Emperor Maximilian II. Acceding to the Hapsburg la...

Conrad II, ruler of the Holy Roman Empire

(Encyclopedia)Conrad II, c.990–1039, Holy Roman emperor (1027–39) and German king (1024–39), first of the Salian dynasty of the Holy Roman Empire. With the end of the Saxon line on the death of Henry II, the ...

Otto I, Holy Roman emperor

(Encyclopedia)Otto I or Otto the Great, 912–73, Holy Roman emperor (962–73) and German king (936–73), son and successor of Henry I of Germany. He is often regarded as the founder of the Holy Roman Empire. Bol...

Lothair II

(Encyclopedia)Lothair II, also called Lothair III, 1075–1137, Holy Roman emperor (1133–37) and German king (1125–37); successor of Holy Roman Emperor Henry V. His predecessor invested him with the duchy of Sa...