In 1526 Vladislav's son, King Louis, was decisively defeated by the Ottoman Turks at the Battle of Mohács and subsequently died. As a result, the Turks conquered part of the Kingdom of Hungary, and the rest (mainly present-day Slovakia territory) came under Habsburg rule under the terms of King Louis' marriage contract. The Bohemian estates elected Austrian Archduke Ferdinand, younger brother of Emperor Charles V, to succeed Louis as king of Bohemia. Thus began almost four centuries of Habsburg rule for both Bohemia and Hungary.