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CASIMIR IV

(1427–92), king of Poland (1447–92) and grand duke of Lithuania, third ruler of the Jagiełłon dynasty. A younger son of King Władysław II, Casimir succeeded his brother Władysław III. Unpopular in Poland, where he was thought to be too favorable to Lithuanians, he courted the support of the lower nobility by giving them the right to refuse taxation. He fought a long war against the Teutonic Knights, winning a great victory over them at Zarnowiec (Puck) in 1462. Four years later, by the second treaty of Torun (Thorn), he regained from the knights the extensive territory on the Baltic coast that became known as West Prussia; the order also acknowledged him as its overlord in East Prussia. From 1485 to 1489 Casimir aided his vassal, Prince Stephen of Moldavia, in his struggle against the Ottoman Turks. Casimir's son Władysław was elected king of Bohemia in 1471 and of Hungary in 1490.

An article from Funk & Wagnalls® New Encyclopedia. © 2006 World Almanac Education Group. A WRC Media Company. All rights reserved. Except as otherwise permitted by written agreement, uses of the work inconsistent with U.S. and applicable foreign copyright and related laws are prohibited.

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CASIMIR IV

CASIMIR IV. (1427–92), king of Poland (1447–92) and grand duke of Lithuania, third ruler of the Jagiełłon dynasty. A younger son of King Władysław II, Casimir succeeded his brother Władysław III. From 1485 . . .

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