Jogaila, later Władysław II Jagiełło (ca.1351/1361–1434), was a Grand Duke of Lithuania and from 1386 King Jadwiga's husband and jure uxoris King of Poland. In Lithuania, he held the title Didysis Kunigaikštis, translated as Grand Duke or Grand Prince (kunigaikštis is a cognate of König and king, and didysis magnifies it).