Kurdish leaders, including Mohammad Khan Ardalan (third from right)

Ardalan vassaldom was established in an area encompassing present day Iranian province of Kordestan from medieval period up to mid 19th century. Ardalan is also the name of the ruling family of that vassaldom. Their center was in the city of Sanandaj (or Sanandaj or Senna). Ardalan was mainly composed of the Kurdish tribe of Ardalan of present day north-western Iran, now dispersed in and around the city of Sanandaj. The ruling family of this tribe claimed descent from Medes.