Ardashir , a grandson of Sasan , had ruled Persis since 208 and six years earlier gained control of the region surrounding Persepolis .
King Ardashir I , founder of the Sassanid dynasty , gains support from some Parthian sub-kings and revolts against the rule of Vologases VI .
founder , a founder of Sasan , had ruled Persis since 208 and six years earlier gained control of the region surrounding Persepolis .
King Ardashir I , founder of the Sassanid dynasty , gains support from some Parthian sub-kings and revolts against the rule of Vologases VI .