Ardashir I (Bavandid ruler)

In 1183, Tekish's daughter was sent along with her mother to the Bavandid capital of Sari, at which time the Oghuz leader Malik Dinar plundered the eastern parts of Mazandaran.

Sometime later, however, Kai Ka'us' son Justan died, and only his 1 year old grandson Zarrinkamar survived, whom Ardashir I agreed to raise and make ruler of the Paduspanid dynasty when the latter had grown up.

After his death, the nobles of the Paduspanid capital of Ruyan made his nephew Hazarasp II the new ruler of the dynasty.

[1] Unlike his predecessor, Hazarasp was a tyrant; he lost allegiance from several of his vassals by having some of their relatives killed, and making peace with the Ismailis, who were the most hated enemy of the Bavandids and several local rulers.

Ardashir, greatly enraged by these actions, re-captured Ruyan and made Hezabr al-Din Khvorshid the new governor of the city.

Ardashir shortly captured and killed one of his disloyal vassals, which made Tekish in revenge invade Mazandaran and devastate the eastern parts of the region.

Sutash shortly devastated parts of Ardashir's domains, including the important city of Sari, which was now under the control of a Khwarazmian governor.

After Tekish's death, the power of the Khwarazmian dynasty in western Iran collapsed and all his former vassals rebelled.

When the Ghurid Sultan Mu'izz al-Din Muhammad invaded Khwarezm in 1204, he sent a delegate to Ardashir, who agreed to recognize his authority.

About the same time, his heir Sharaf al-Muluk died, and the succession passed to another son, Rustam V, who was freed from prison and was brought to the throne at Amol.