Instead of AbU Nasr, to rule Hormuz, Abu Bakr installed Shihāb ud-Dīn Muhammad, son of Isa, son of Kay Qobad. The new ruler married his cousin Bībī Nāssir ud-Dīn , the daughter of Abu Nasr. The queen was much better cut as a ruler and political player than her husband. Perhaps recognizing the precarious position in which her father and uncles had put Hormuz, swinging between Kerman and Fars (and sometimes even Shabankara), Bibi Nāssir ud-Dīn proceeded to find a man who could help her regain the relative independence of Hormuz. The man was Abulmakārim Rukn ud-Dīn Mahmud Qalhati (Kalahaty/Kalahati).