Columbia Encyclopedia

(Encyclopedia) Charles IV (Charles the Fair), 1294–1328, king of France (1322–28), youngest son of Philip IV, brother and successor of Philip V. Charles continued his brother's work of strengthening the royal po...

(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...

(Encyclopedia) Eugene IV, 1383–1447, pope (1431–47), a Venetian named Gabriele Condulmer; successor of Martin V. He was of exemplary character and ascetic habits. Gregory XII, his uncle, made him cardinal (1408)...

(Encyclopedia) Mari El mäˈrē ĕlˈ [key], constituent republic (1990 pop. 760,000), c.8,900 sq mi (23,100 sq km), E central European Russia, in the middle Volga valley. Yoshkar-Ola is the capital. The region is a...

(Encyclopedia) Kazan kəzänˈ, –zănˈ, Rus. kəzäˈnyə [key], city (1989 est. pop. 1,094,000), capital of Tatarstan, E European Russia, on the Volga. It is a major historic, cultural, industrial, and commercia...

(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 ...

(Encyclopedia) Peter IV (Peter the Ceremonious), 1319?–1387, king of Aragón and count of Barcelona (1336–87); son and successor of Alfonso IV. He supported Alfonso XI of Castile at the battle of Tarifa (1340), ...

(Encyclopedia) Christian IV, 1577–1648, king of Denmark and Norway (1588–1648), son and successor of Frederick II. After assuming (1596) personal rule from a regency, he concentrated on building the navy, indust...

(Encyclopedia) Rama IV: see Mongkut.

(Encyclopedia) Charles IV, 1748–1819, king of Spain (1788–1808), second son of Charles III, whom he succeeded in place of his imbecile older brother. Unlike his father, Charles IV was an ineffective ruler and in...