Ladislaus II or Ladislaus Jagiello yägyĕ´lō [key], 1350?–1434, king of Poland (1386–1434), grand duke of Lithuania (1378–1401), founder of the Jagiello dynasty. Leaguing with Poland against the menacing Teutonic Knights , he acceded to the Polish throne by marrying Queen Jadwiga . Baptized at this time, he agreed to convert Lithuania to Christianity. The union of Poland and Lithuania continued after he delegated (1401) a cousin as grand duke. Jagiello's victory over the Teutonic Knights at Tannenberg (1410) resulted in the First Peace of Toruń in 1411. His son by a later wife, Ladislaus III, succeeded him as Polish king.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
See more Encyclopedia articles on: Polish History: Biographies