 Iliaş faced the rebellion of his brother Stephen and several boyars, who, helped by Prince Vlad II Dracul of neighboring Wallachia, managed to dethrone him.Iliaş enlisted the help of Władysław II, but he was defeated by the new prince and escaped to Poland.After Stephen pledged allegiance to the Poles, the latter imprisoned Iliaş until the ascension of Władysław III.