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Henry IV, king of England

(Encyclopedia)Henry IV, 1367–1413, king of England (1399–1413), eldest son of John of Gaunt and grandson of Edward III; called Henry of Bolingbroke. He founded the Lancastrian dynasty. The new king was immed...

Otto IV, Holy Roman emperor

(Encyclopedia)Otto IV, 1175?–1218, Holy Roman emperor (1209–15) and German king, son of Henry the Lion, duke of Saxony. He was brought up at the court of his uncle King Richard I of England, who secured his ele...

Conrad IV, ruler of the Holy Roman Empire

(Encyclopedia)Conrad IV, 1228–54, German king (1237–54), king of Sicily and of Jerusalem (1250–54), son of Holy Roman Emperor Frederick II. He was elected (1237) king of the Romans at his father's instigation...

William IV, king of Great Britain and Ireland

(Encyclopedia)William IV, 1765–1837, king of Great Britain and Ireland (1830–37), third son of George III. He went to sea in 1779, served under Admiral George Rodney in action off Cape St. Vincent (1780), and b...

Frederick IV, king of Denmark and Norway

(Encyclopedia)Frederick IV, 1671–1730, king of Denmark and Norway (1699–1730), son and successor of Christian V. He allied himself (1699) with Augustus II of Poland and Saxony and with Peter I of Russia against...

Philip IV, king of France

(Encyclopedia)Philip IV (Philip the Fair), 1268–1314, king of France (1285–1314), son and successor of Philip III. The policies of his reign greatly strengthened the French monarchy and increased the royal reve...

Henry IV, Spanish king of Castile and León

(Encyclopedia)Henry IV, 1425–74, Spanish king of Castile and León (1454–74), son and successor of John II. His weakness opened the way to civil strife and anarchy. The Castilian nobles refused to recognize Hen...

Carlos, second son of Charles IV of Spain

(Encyclopedia)Carlos (Carlos María Isidro de Borbón), 1788–1855, second son of Charles IV of Spain. He was the first Carlist pretender. After his father's abdication (1808) he was, with the rest of his family, ...

George IV, king of Great Britain and Ireland

(Encyclopedia)George IV, 1762–1830, king of Great Britain and Ireland (1820–30), eldest son and successor of George III. In 1785 he married Maria Anne Fitzherbert, a Roman Catholic. The marriage was illegal, ho...

Philip IV, king of Spain, Naples, and Sicily

(Encyclopedia)Philip IV, 1605–65, king of Spain, Naples, and Sicily (1621–65) and, as Philip III, king of Portugal (1621–40); son and successor of Philip III of Spain. Philip IV was intelligent but lacked int...