The three surviving sons of Charles Robert (Charles I of Hungary) were Louis I of Hungary (1326–1382), Andrew, Duke of Calabria (1327-1345), and Stephen, Duke of Slavonia (1332-1354). Louis I had only two surviving daughters, Mary of Hungary (1371-1395), who married the future Holy Roman emberor Sigismund of Luxembourg, and Hedwig of Poland (1373/74-1399), who was given in marriage to the Grand Duke of Lithuania Władysław II Jagiełło, the future king of Poland. (See the section of Poland.) After Louis I's death without male heirs, Mary's husband, Sigismund of Luxembourg (1368-1437) managed to be accepted as Mary's co-ruler, by the Hungarian lords. They had only a daughter, Elizabeth of Luxembourg. When the queen died (1395) the Hungarian crown passed over to the House of Luxembourg.