Vistahm

Timeline

1. c. 575–590Ctesiphon · MesopotamiaVistahm came from the Ispahbudhan family, one of the seven great Parthian noble houses, which for generations held high military and civil posts in the Sasanian north. When Bahram Chobin rebelled and advanced on Ctesiphon in 590, Vistahm and his brother Vinduyih seized the moment, launching a coup within the palace, arresting and deposing Hormizd IV, and raising his son Khosrow II to the throne, then controlling imperial power from behind the scenes.
2. 590–591Byzantine frontier and Mesopotamia · MesopotamiaAfter Khosrow II was defeated by Bahram Chobin and fled to the Byzantine Empire seeking military aid from Emperor Maurice, Vistahm continued to support Khosrow and helped coordinate the counterstrike against Bahram. In 591 he joined Byzantine forces in routing Bahram; Khosrow II was successfully restored, and Vistahm was rewarded with the governorship of the empire's great northern provinces.
3. c. 591–596Rayy (northern Iran) · Northern IranAfter Khosrow II's restoration, his brother Vinduyih was executed, and Vistahm immediately rose in rebellion, drawing on the Ispahbudhan family's deep roots in the north to carve out an independent domain. He ruled independently in northern Iran (Media, Parthia, and the Caspian coastal provinces) for some five or six years, and repeated imperial campaigns failed to subdue him. Around 596 Vistahm was killed in battle by a subordinate general or an assassin, ending this last large-scale Parthian noble secession.