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Concept
Baduspanids
Summary
The Baduspanids or Badusbanids (Pâdusbâniân), were a local Iranian dynasty of Tabaristan which ruled over Ruyan/Rustamdar. The dynasty was established in 665, and with 933 years of rule as the longest dynasty in Iran, it ended in 1598 when the Safavids invaded and conquered their domains.
During the Arab invasion of Iran, the last Sasanian King of Kings (shahanshah) Yazdegerd III (632-651) reportedly granted control over Tabaristan to the Dabuyid ruler Gil Gavbara, who was a great-grandson of shahanshah Jamasp (496-498/9). Gil Gavbara's son Baduspan I was granted control over Ruyan in 665, thus forming the Baduspanid dynasty, which would rule the region until the 1590s. Another son, Dabuya succeeded their father the former as the head of the Dabuyid family, ruling the rest of Tabaristan.
The last Dabuyid ruler Khurshid managed to safeguard his realm against the Umayyad Caliphate, but after its replacement by the Abbasid Caliphate, he was finally defeated in 760. Tabaristan was subsequently made a regular province of the caliphate, ruled from Amul by an Arab governor, although the local dynasties of the Bavandids, Qarinvandids, the Zarmihrids and Baduspanids, formerly subject to the Dabuyids, continued to control the mountainous interior as tributary vassals of the Abbasid government. These rulers were largely if not completely autonomous. Due to the regional prominence of the Baduspanids, Ruyan became known as Rustamdar in the Mongol era, a deformed form of their regnal title, ustandar, which they had used since the rule of Shahriyar III ibn Jamshid (937-949).
The Baduspanids were briefly deposed from power by the Mar'ashis, who ruled Rustamdar from 1381 till 1390, when they decided to install Baduspanid prince Sa'd al-Dawla Tus on the throne in Rustamdar to challenge the Afrasiyabid prince Iskandar-i Shaykhi who accompanied the Turco-Mongol ruler Timur (1370-1405), who intended to conquer Mazandaran. However, Tus secretly corresponded with Iskandar-i Shaykhi, and eventually joined the forces of Timur in 1392.
Official source
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