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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...

John XXI, pope

(Encyclopedia)John XXI, d. 1277, pope (1276–77), a Portuguese named Pedro Giuliano; successor of Adrian V. Known generally as Peter of Spain (Petrus Hispanus), he is the only Portuguese pope. Peter's reputation a...

Pope, John Russell

(Encyclopedia)Pope, John Russell, 1874–1937, American architect, b. New York City, studied at the College of the City of New York and the School of Mines, Columbia (Ph.B., 1894). He won a fellowship (1895) to the...

Duval, William Pope

(Encyclopedia)Duval, William Pope do͞ovôlˈ, –vălˈ [key], 1784–1854, American frontiersman, territorial governor of Florida (1822–34), b. near Richmond, Va. He went to Kentucky as a young man, studied law...

Benedict XI

(Encyclopedia)Benedict XI, d. 1304, pope (1303–4), an Italian (b. Treviso) named Niccolo Boccasini; successor of Boniface VIII. Prior to his election he had been master general of the Dominican order. As pope he ...

Vienne, Council of

(Encyclopedia)Vienne, Council of, 1311–12, 15th ecumenical council of the Roman Catholic Church, held at Vienne, France. It was convened by Pope Clement V at the behest of Philip IV of France as a further move in...

Geoffrey IV

(Encyclopedia)Geoffrey IV, known as Geoffrey Plantagenet plătăjˈənət [key] [O.Fr.,=sprig of broom; he usually wore a sprig in his helmet], 1113–51, count of Anjou (1129–51); son of Fulk, count of Anjou and...

Edward IV

(Encyclopedia)Edward IV, 1442–83, king of England (1461–70, 1471–83), son of Richard, duke of York. He succeeded to the leadership of the Yorkist party (see Roses, Wars of the) after the death of his father i...

Mustafa IV

(Encyclopedia)Mustafa IV, 1778–1808, Ottoman sultan (1807–8), son of Abd al-Hamid I. He was raised to the throne by the reactionary Janissaries who had deposed Mustafa's cousin, Selim III, because they opposed ...

John IV, Byzantine emperor of Nicaea

(Encyclopedia)John IV (John Lascaris) lăsˈkərĭs [key], b. c.1250, d. after 1273, Byzantine emperor of Nicaea (1258–61), son and successor (under a regency) of Theodore II and last of the Lascarids. Michael Pa...