Ziyarid dynasty

The Ziyarid state of Mardavij ibn Ziyar and his brother Vashmgir and their sons, of the Jil, brothers of the Daylam. ¹ It was founded, in the source's account, by Mardavij ibn Ziyar.

They were commanders of the Daylam for al-Atrush, and then commanders for the Alawids, whom they relied on for support. When the state of al-Atrush died out at a time when the Abbasid state was failing, they went through the regions seeking power, scattered. ¹

Mardavij ruled Isfahan and al-Ray. He sent for his brother Vashmgir from the land of Gilan in 320 AH, and relied on him for support. ¹

After Mardavij was killed, Vashmgir ruled Tabaristan and Jurjan, and disputed al-Ray and Isfahan with Rukn al-Dawla ibn Buya. ¹

The data put the beginning at about 928 CE (about 316 AH), an approximate date. The data include no end date, and a second source is needed. ²