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Constantius II

(Encyclopedia)Constantius II, 317–61, Roman emperor, son of Constantine I. When the empire was divided (337) at the death of Constantine, Constantius II was given rule over Asia Minor, Syria, and Egypt, while his...

Ferdinand III, Holy Roman emperor

(Encyclopedia)Ferdinand III, 1608–57, Holy Roman emperor (1637–57), king of Hungary (1626–57) and of Bohemia (1627–57), son and successor of Holy Roman Emperor Ferdinand II. After the dismissal and assassin...

Theodore II , emperor of Ethiopia

(Encyclopedia)Theodore II, emperor of Ethiopia: see Tewodros II. ...

Sylvester I, Saint

(Encyclopedia)Sylvester I, Saint, pope (314–35), a Roman; successor of St. Miltiades (St. Melchiades). He was pope under the reign of Emperor Constantine I, who built for him the Lateran and other churches. St. S...

Eusebius of Nicomedia

(Encyclopedia)Eusebius of Nicomedia nĭkōmēˈdēə [key], d. 342, Christian churchman and theologian, leader of the heresy of Arianism. He was bishop of Nicomedia (330–39) and patriarch of Constantinople (339�...

Hadrian, Roman emperor

(Encyclopedia)Hadrian hāˈdrēən [key], a.d. 76–138, Roman emperor (117–138), b. Spain. His name in full was Publius Aelius Hadrianus. An orphan, he became the ward of Trajan. Hadrian distinguished himself as...

William I, emperor of Germany and king of Prussia

(Encyclopedia)William I, 1797–1888, emperor of Germany (1871–88) and king of Prussia (1861–88), second son of the future King Frederick William III of Prussia and Louise of Mecklenburg. Essentially conservati...

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...

Louis I, emperor of the West

(Encyclopedia)Louis I or Louis the Pious, Fr. Louis le Pieux or Louis le Débonnaire, 778–840, emperor of the West (814–40), son and successor of Charlemagne. He was crowned king of Aquitaine in 781 and co-empe...

Ducas

(Encyclopedia)Ducas dyo͞oˈkəs [key], Greek family and dynasty of Constantinople. Some of its members were Byzantine emperors—Constantine X, Michael VII, Alexius V, and John III. ...