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Christian IV

(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...

Thutmose IV

(Encyclopedia)Thutmose IV thŏthˈmēz, tōtˈmĕs [key], reigned c.1406–1398 b.c., king of ancient Egypt, of the XVIII dynasty, son and successor of Amenhotep II. He invaded Asia and Nubia, and formed alliances ...

Amenhotep IV

(Encyclopedia)Amenhotep IV or Amenophis IV: see Ikhnaton. ...

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...

Haakon IV

(Encyclopedia)Haakon IV (Haakon Haakonsson), 1204–63, king of Norway (1217–63), illegitimate son of Haakon III and grandson of Sverre. Secretly reared by the Birkebeiner faction (see Sverre), he was chosen king...

Urban IV

(Encyclopedia)Urban IV, d. 1264, pope (1261–64), a Frenchman (b. Troyes) named Jacques Pantaléon; successor of Alexander IV. In the pontifical service he was sent on missions into N Germany; then he was made bis...

Constantine II, king of Greece

(Encyclopedia)Constantine II, 1940–2023, king of the Hellenes; also known as Constantine XIII. He was appointed regent in 1964 and succeeded to the throne the same ...

Thibaut IV

(Encyclopedia)Thibaut IV tēbōˈ [key], 1201–53, French trouvère, count of Champagne. He became Thibaut I, king of Navarre, in 1234, succeeding his uncle Sancho VII. He was defeated while leading a Crusade (123...

Antiochus IV

(Encyclopedia)Antiochus IV (Antiochus Epiphanes) ēpĭfˈənēz [key], d. 163 b.c., king of Syria (175 b.c.–163 b.c.), son of Antiochus III and successor of his brother Seleucus IV. His nephew (later Demetrius I)...

Ptolemy IV

(Encyclopedia)Ptolemy IV (Ptolemy Philopator) fĭlŏpˈətər [key], king of ancient Egypt (221–205 b.c.), of the Macedonian dynasty, son of Ptolemy III and Berenice of Cyrene. He had his mother, his brother, his...