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Constantine V, Byzantine emperor

(Encyclopedia)Constantine V (Constantine Copronymus), 718–75, Byzantine emperor (741–75), son and successor of Leo III. An able general and administrator, he fought successfully against the Arabs, Slavs, and Bu...

Constantine IV, Byzantine emperor

(Encyclopedia)Constantine IV, c.652–685, Byzantine emperor (668–85), son and successor of Constans II. He defended Constantinople against the annual naval attacks of the Muslims, who finally withdrew in 678; Gr...

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...

Leopold I, Holy Roman emperor

(Encyclopedia)Leopold I, 1640–1705, Holy Roman emperor (1658–1705), king of Bohemia (1656–1705) and of Hungary (1655–1705), second son and successor of Ferdinand III. Upon his elder brother's death (1654), ...

Charles VII, Holy Roman emperor

(Encyclopedia)Charles VII, 1697–1745, Holy Roman emperor (1742–45) and, as Charles Albert, elector of Bavaria (1726–45). Having married a daughter of Holy Roman Emperor Joseph I, he refused to recognize the p...

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...

Constantine the Great

(Encyclopedia)Constantine the Great: see Constantine I, Roman emperor. ...

Constantine, city, Algeria

(Encyclopedia)Constantine kŏnˈstəntēn [key], ancient Cirta, city, capital of Constantine dept., NE Alge...

Constantine I, king of Greece

(Encyclopedia)Constantine I, 1868–1923, king of the Hellenes, eldest son of George I, whom he succeeded in 1913. Married to Sophia, sister of the German emperor William II, he opposed the pro-Allied policy of the...

Valerian, Roman emperor

(Encyclopedia)Valerian (Publius Licinius Valerianus) vəlērˈēən [key], d. after 260, Roman emperor (253–60). He held important posts, both civil and military, under the emperors Decius and Gallus. After the s...