In 1330, an alliance was formed by Bulgaria and the Byzantine Empire, which sought to invade Serbia. In 1330, "Young King" Dušan defeated Bulgarian Emperor Michael III Shishman at Velbazhd, after which King Uroš III appointed his nephew Ivan Stefan at the Bulgarian throne in August. Uroš III now had the chance to attack the Byzantines, but chose not to, resulting in the alienation of much of the nobility that sought expansion to the south. This resulted in a conflict between Uroš III and his son, which ended with Dušan being crowned King in September 1331. Gradislav, as some other magnates which had served Uroš III (e.g. Vojvoda Vojin, Đuraš Ilijić), supported Dušan in this conflict.