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York, Edmund of Langley, duke of

(Encyclopedia)York, Edmund of Langley, duke of, 1341–1402, fifth son of Edward III of England. He was made (1362) earl of Cambridge, served on expeditions to Spain and France, and married (1372) Isabel, daughter ...

Ourique

(Encyclopedia)Ourique ōrēˈkə [key], town (1991 pop. 1,339), Beja dist., S Portugal, in Baixo Alentejo. Although tradition says Alfonso I defeated the Moors there in 1139, the battle of Ourique was actually foug...

Algarve

(Encyclopedia)Algarve əlgärˈvə [key], historic province, 1,958 sq mi (5,070 sq km), extreme S Portugal, coextensive with Faro dist. The capital is Faro, and other important cities are Silves, Portimão, and Lag...

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...

Muhammad IV, Ottoman sultan

(Encyclopedia)Muhammad IV or Mehmet IV, 1641–92, Ottoman sultan (1648–87). He was proclaimed sultan of the Ottoman Empire (Turkey) by the corps of Janissaries after the deposition and murder of his father, Sult...

Leo IV, Saint, pope

(Encyclopedia)Leo IV, Saint, d. 855, pope (847–55), a Roman; successor of Sergius II. He had seen the Saracen attack on Rome (846), and to prevent its recurrence he fortified the city and its suburbs. He built a ...

Leo IV, Byzantine emperor

(Encyclopedia)Leo IV (Leo the Khazar), d. 780, Byzantine emperor (775–80), son and successor of Constantine V. He owed his nickname to his mother, a Khazar princess. Leo tempered the iconoclastic excesses of his ...

Aragón, house of

(Encyclopedia)Aragón, house of, family that ruled in Aragón, Catalonia, Majorca, Sicily, Naples, Sardinia, Athens, and other territories in the Middle Ages. It was descended from Ramiro I of Aragón (1035–63), ...

King of Prussia

(Encyclopedia)King of Prussia, industrialized suburban area (1990 pop. 18,406), Montgomery co., SE Pa. It has glass and steel fabricating, food processing, printing and publishing, and varied manufacturing (textile...

Ferdinand II, Spanish king of León

(Encyclopedia)Ferdinand II, d. 1188, Spanish king of León (1157–88), son and successor of Alfonso VII. He invaded Castile and set up a protectorate during the minority (1158–66) of his nephew Alfonso VIII. He ...