 In the winter of 1450–1451, Murad II fell ill, and died in Edirne.He was succeeded by his son Mehmed II (1451–81).When Murad ascended to the throne, he sought to regain the lost Ottoman territories that had reverted to autonomy following his grandfather Bayezid I’s defeat at the Battle of Ankara in 1402 at the hands of Timur Lang.