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Peter the Cruel

(Encyclopedia)Peter the Cruel, 1334–69, Spanish king of Castile and León (1350–69), son and successor of Alfonso XI. His desertion of his wife, Blanche of Bourbon, for María Padilla and his favors to the Padi...

Maxwell, James Clerk

(Encyclopedia)Maxwell, James Clerk klärk [key], 1831–79, great Scottish physicist. After a brilliant career at Edinburgh and Cambridge, where he won early recognition with mathematical papers, he was a professor...

Watson, James Dewey

(Encyclopedia)Watson, James Dewey, 1928–, American biologist and educator, b. Chicago, Ill., grad. Univ. of Chicago, 1947, Ph.D. Univ. of Indiana, 1950. With F. H. C. Crick he began (1951) research on the molecul...

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...

Catherine of Valois

(Encyclopedia)Catherine of Valois vălˈwä, Fr. välwäˈ [key], 1401–37, queen consort of Henry V of England, daughter of Charles VI of France. Married in 1420, she bore Henry the son who was to become Henry VI...

Épernon, Jean Louis de Nogaret, duc d'

(Encyclopedia)Épernon, Jean Louis de Nogaret, duc d' zhäN lwē də nōgärāˈ dük dāpĕrnôNˈ [key], 1554–1642, French nobleman. He distinguished himself during the civil wars at the beginning of the reign ...

John I, Spanish king of Castile and León

(Encyclopedia)John I, 1358–90, Spanish king of Castile and León (1379–90), son and successor of Henry II. He tried unsuccessfully to unite the Portuguese and Castilian crowns but was twice defeated by the Port...

Henry VII, Holy Roman emperor and German king

(Encyclopedia)Henry VII, c.1275–1313, Holy Roman emperor (1312–13) and German king (1308–13). A minor count of the house of Luxembourg, Henry was elected German king on the death of King Albert I after the el...

Matilda, queen of England

(Encyclopedia)Matilda or Maud, 1102–67, queen of England, daughter of Henry I of England. Henry arranged a marriage for her with Holy Roman Emperor Henry V, and she was sent to Germany, betrothed, and five years ...

Katharine of Aragón

(Encyclopedia)Katharine of Aragón, 1485–1536, first queen consort of Henry VIII of England; daughter of Ferdinand II of Aragón and Isabella of Castile. In 1501 she was married to Arthur, eldest son of Henry VII...