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Henry V, Holy Roman emperor and German king

(Encyclopedia)Henry V, 1081–1125, Holy Roman emperor (1111–25) and German king (1105–25), son of Henry IV. Crowned joint king with his father in 1099, he put himself at the head of the party desiring reconcil...

Constance, Holy Roman empress

(Encyclopedia)Constance, 1154–98, Holy Roman empress, wife of Holy Roman Emperor Henry VI; daughter of King Roger II of Sicily. She was named heiress of Sicily by her nephew King William II. On his death, however...

Frederick III, Holy Roman emperor and German king

(Encyclopedia)Frederick III, 1415–93, Holy Roman emperor (1452–93) and German king (1440–93). With his brother Albert VI he inherited the duchies of Styria, Carinthia, and Carniola. He became head of the hous...

Philomela and Procne

(Encyclopedia)Philomela and Procne fĭlōmēˈlə, prŏkˈnē [key], in Greek mythology, daughters of King Pandion of Attica. Procne married Tereus, king of Thrace, and bore him a son, Itys (or Itylus). Tereus late...

Furies

(Encyclopedia)Furies or Erinyes ērĭnˈē-ēz [key], in Greek and Roman religion and mythology, three daughters of Mother Earth, conceived from the blood of Uranus, when Kronos castrated him. They were powerful di...

Constantine I, Roman emperor

(Encyclopedia)Constantine I or Constantine the Great kŏnˈstəntēn, –tīn [key], 288?–337, Roman emperor, b. Naissus (present-day Niš, Serbia). He was the son of Constantius I and Helena and was named in ful...

Frederick II, Holy Roman emperor and German king

(Encyclopedia)Frederick II, 1194–1250, Holy Roman emperor (1220–50) and German king (1212–20), king of Sicily (1197–1250), and king of Jerusalem (1229–50), son of Holy Roman Emperor Henry VI and of Consta...

Biton and Cleobis

(Encyclopedia)Biton klēōˈbĭs [key], in Greek mythology, sons of the priestess Cydippe. When their mother wanted to see a famous temple of Hera, which was many miles away, the brothers dragged her chariot there....

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 ...

aerial and satellite photography

(Encyclopedia)aerial and satellite photography, technology and science of taking still or moving-picture photographs from a camera mounted on a balloon, airplane, satellite, rocket, or spacecraft. In the 19th cent....