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Frederick II, Holy Roman emperor and German king

(Encyclopedia)Frederick II, 1194–1250, Holy Roman emperor (1220–50) and German king (1212–20), king of Sicily (1197–1250), and king of Jerusalem (1229–50), son of Holy Roman Emperor Henry VI and of Consta...

Muhammad II, Ottoman sultan

(Encyclopedia)Muhammad II or Mehmet II (Muhammad the Conqueror), 1429–81, Ottoman sultan (1451–81), son and successor of Murad II. He is considered the true founder of the Ottoman Empire (Turkey). He completed ...

Alfonso II, king of Portugal

(Encyclopedia)Alfonso II (Alfonso the Fat), 1185–1223, king of Portugal (1211–23), son and successor of Sancho I. His reign was spent in struggles with the church and his brothers and sisters, to whom his fathe...

Demetrius II, king of Macedon

(Encyclopedia)Demetrius II, d. 229 b.c., king of Macedon (239–229 b.c.), son of Antigonus II. His reign was a confusion of wars and invasions, mostly concerned with possession of Epirus. The Aetolian League and t...

Alexander II, czar of Russia

(Encyclopedia)Alexander II, 1818–81, czar of Russia (1855–81), son and successor of Nicholas I. He ascended the throne during the Crimean War (1853–56) and immediately set about negotiating a peace (see Paris...

David II, king of Scotland

(Encyclopedia)David II (David Bruce), 1324–71, king of Scotland (1329–71), son and successor of Robert I. David's guardians were not strong enough to prevent the invasion (1332) of Scotland by Edward de Baliol,...

Alfonso II, king of Aragón

(Encyclopedia)Alfonso II, 1152–96, king of Aragón (1162–96) and, as Raymond Berengar V, count of Barcelona (1162–96); son and successor of Raymond Berengar IV of Barcelona and Petronilla of Aragón. He inher...

Alexander II, king of Scotland

(Encyclopedia)Alexander II, 1198–1249, king of Scotland (1214–49), son and successor of William the Lion. He joined the English barons in their revolt against King John of England in 1215. Though he made his pe...

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 ...

Albert II, prince of Monaco

(Encyclopedia)Albert II, 1958–, prince of Monaco (2005–), grad. Amherst College (B.A., 1981). A member of the long-ruling Grimaldi family, he is the son of Prince Rainier III, upon whose death he succeeded to t...