Rao Bal Kishan
Rao Bal Kishan was an Yaduvanshi Ahir king of Haryana-Delhi and some part of Alwar, Jaipur in Rajasthan.  Under his rule, the Ahirwal covered present day districts of Rewari, Mahendergarh, Narnual, Charkhi Dadri, Hissar, Jhajjar, Rohtak, Gurgaon, Najafgarh, Dwarka, Bahadurgarh, Rohini, Alwar and Jaipur.