Ayaz ruled the new island and its possessions until 1311, when he retired to Qalhat, appointing a descendants of Shihab ud-Dīn Mahmud (the ‘last of the old kings of Hormuz’) to rule the new kingdom. The new king, Izz ud-Dīn Gurdānshah son of Salghur son of Shihab ud-Dīn Mahmud, was an able warrior and a generous ruler who continued Ayaz's policies. A dispute with the ruler of Kish, Shaikh Nu’aim, brought Gurdanshah to conflict with the ruler of the coast and the islands, the other son of Ibrahim Tibi, known as Izz ud-Dīn Abdul-Azīz. The Tibi ruler, with the support of Uljaitu Khan, claimed ancestral possession of Hormuz - now a prosperous island kingdom - and put a siege on Hormuz that was stifling its lucrative trade. A meeting inside a boat resulted in the capture of Gordan Shah and his imprisonment in Kish. Bibi Sultan, Gurdanshah’d wife, mounted a naval battle against Izz ud-Dīn Abdul Aziz. However, unfavourable conditions delayed the start of the battle, but allowed for Gurdanshah to escape from Kish and return to Hormuz, where he ruled until his death in 1317. The conflict with the Tibis was temporarily halted by the payment of tribute of '30,000 Hormuzi dirhams' to Abdul Aziz. Gordan Shah was succeeded by his son Bahramshah, the latter soon being deposed and murdered by his brother-in-law (husband of Gurdanshah’s daughter Bibi Naz Malek), Shihab ud-Din Yusef. Two of Bahramshah’s brothers, Tahmtan and Kay Qobad, escaped to Kish and later to the Tibi court in Lār, asking for help from Rukn ad-Dīn Mahmud, the new ruler of Fars and a brother of Izz ud-Dīn Abdul Aziz. In 1318, with the help of the Tibi ruler, Tahmtan and Kay Qobad removed Yusef from the throne, installing Tahmtan as the new ruler.