[5] In the 12th century, Shoja al-Din Khorshid ibn Ali took the title Atabak and became and independent ruler after the death of his suzerain.

Caliph al-Nasir refused to recognize the brother of Ḥosām-al-dīn Ḵalī, Badr-al-dīn Masʿūd, as the new leader who thus approached and obtained Mongol support.

The land was afterwards divided between two sons of Badr-al-dīn Masʿūd who both managed to advance their territory from Hamadan to Shushtar, and from Isfahan to Arab-populated areas.

[2] Tāǰ-al-dīn Šāh b. Ḵalīl died in 1294 and was succeeded by Ḥosām-al-dīn ʿOmar who quickly had to cede power to Ṣamṣām-al-dīn Maḥmūd who was executed by Ghazan in 1296 for taking part in the murder of Ḵeżr.

[2] Timur of the Timurid Empire invaded the territory in 1386 on the pretext of the dynasty overtaxing the population and he completely destroyed the capital Khorramabad and devastated Borujerd.

The ruler of the dynasty was Moḥammadī when Shah Ismail II died and he had recognized the suzerainty of the Ottoman Empire before renewing his loyalty to the Safavids.

When approached by the Shah, Shahverdi Abbasi led to Baghdad, was reinstated in 1594/95, became subordinate again and ultimately executed in 1597/98, thereby ending the Khorsidi dynasty.