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John I Albert (Polish: Jan I Olbracht; 27 December 1459 – 17 June 1501) was King of Poland from 1492 until his death in 1501 and Duke of Głogów (Glogau) from 1491 to 1498. He was the fourth Polish sovereign from the Jagiellonian dynasty, the son of Casimir IV and his wife Elizabeth of Austria.