By marrying Elisabeth of Luxembourg, the daughter of Emperor Sigismund in 1437, Duke Albert V of the Albertine line (1397–1439) became the ruler of Bohemia and Hungary, again expanding the family's political horizons. The next year, Albert was crowned as King of the Romans, known as such as Albert II. Following his early death in a battle against the Ottomans in 1439 and that of his son Ladislaus Postumus in 1457, the Habsburgs lost Bohemia once more as well as Hungary, for several decades. However, with the extinction of the House of Celje in 1456 and the House of Wallsee-Enns in 1466/1483, they managed to absorb significant secular enclaves within their territories, and create a contiguous domain stretching from the border with Bohemia to the Adriatic sea.