They may have been descended from the Chaghān Khudās who ruled Chaghaniyan during the early Middle Ages; another possibility is that their ancestors were Arabs who migrated to the region and were Iranicized.
They may have been descended from the Chaghān Khudās. This Chaghān Khudās ruled Chaghaniyan during the early Middle Ages. Their ancestors were Arabs. These Arabs migrated to the region. These Arabs were Iranicized. Another possibility is this.