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Rosamond, mistress of Henry II of England

(Encyclopedia)Rosamond (Rosamond Clifford), d. 1176, mistress of Henry II of England. She was not openly acknowledged by the king until 1174, after he had imprisoned his wife, Eleanor of Aquitaine. On Rosamond's de...

Copernican system

(Encyclopedia)Copernican system, first modern European theory of planetary motion that was heliocentric, i.e., that placed the sun motionless at the center of the solar system with all the planets, including the ea...

Commagene

(Encyclopedia)Commagene kŏməjēˈnē [key], ancient district of N Syria, on the Euphrates River and S of the Taurus range, now in SE Asian Turkey. Its metropolis, Samosata, was founded by Samos, the king of Comma...

constellation, in astronomy

(Encyclopedia)CE5 Constellations: Southern sky CE5 Constellations: Southern sky CE5 Constellations: Southern sky constellation, in common usage, group of stars that appear to form a configuration in the...

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 ...

Charles II, king of England, Scotland, and Ireland

(Encyclopedia)Charles II, 1630–85, king of England, Scotland, and Ireland (1660–85), eldest surviving son of Charles I and Henrietta Maria. Charles was a ruler of considerable political skill. His reign was m...

Charles II, king of Spain, Naples, and Sicily

(Encyclopedia)Charles II, 1661–1700, king of Spain, Naples, and Sicily (1665–1700), son and successor of Philip IV. The last of the Spanish Hapsburgs, he was physically crippled and mentally retarded. His mothe...

Henry II, Holy Roman emperor and German king

(Encyclopedia)Henry II, 973–1024, Holy Roman emperor (1014–24) and German king (1002–24), last of the Saxon line. He succeeded his father as duke of Bavaria. When Otto III died without an heir, Henry, who was...

Henry II, Spanish king of Castile and León

(Encyclopedia)Henry II or Henry of Trastámara trăstəmărˈə [key], 1333?–1379, Spanish king of Castile and León (1369–79), illegitimate son of Alfonso XI. After taking part in several unsuccessful revolts ...

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...