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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...

John II, Spanish king of Castile and León

(Encyclopedia)John II, 1405–54, Spanish king of Castile and León (1406–54), son and successor of Henry III. He was little interested in government, which he entrusted to his favorite Alvaro de Luna. Literature...

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...

George II, king of Great Britain and Ireland

(Encyclopedia)George II (George Augustus), 1683–1760, king of Great Britain and Ireland (1727–60), son and successor of George I. Though devoted to Hanover, of which he was elector, George was more active in th...

James II, king of England, Scotland, and Ireland

(Encyclopedia)James II, 1633–1701, king of England, Scotland, and Ireland (1685–88); second son of Charles I, brother and successor of Charles II. James made an effort to restore himself by landing in Irel...