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Northumberland, Henry Percy, 4th earl of

(Encyclopedia)Northumberland, Henry Percy, 4th earl of, 1446–89, English nobleman. When his father, the 3d earl, was killed fighting in the Lancastrian army at Towton (1461), he was imprisoned by Edward IV and th...

Douglas, Archibald, 5th earl of Angus

(Encyclopedia)Douglas, Archibald, 5th earl of Angus, 1449–1514, Scottish nobleman. He was a member of the faction that allied with Edward IV of England in opposition to the influence of Robert Cochrane, favorite ...

Morton, John, English prelate and statesman

(Encyclopedia)Morton, John, 1420?–1500, English prelate and statesman, archbishop of Canterbury (1486–1500). He studied law at Oxford and practiced in the London ecclesiastical courts. A supporter of the Lancas...

Pole, Reginald

(Encyclopedia)Pole, Reginald, 1500–1558, English churchman, archbishop of Canterbury (1556–58), cardinal of the Roman Catholic Church. He was a cousin of the Tudors, being the son of Sir Richard Pole and of Mar...

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 ...

Louis IV, French king

(Encyclopedia)Louis IV or Louis d'Outremer lwē do͞otrəmĕrˈ [key] [Fr.,=Louis from overseas], 921–54, French king (936–54), son of King Charles III (Charles the Simple). He spent his youth as an exile in En...

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...

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...

Abd al-Aziz IV

(Encyclopedia)Abd al-Aziz IV, 1880–1943, sultan of Morocco (1894–1908), son of Hassan. His weak control was evident after the death (c.1900) of the regent Ba Ahmed. His submissiveness to foreign influence, his ...