Rao Gujarmal Singh
Rao Gujarmal Singh was an Yaduvanshi Ahir King of Haryana-Rajasthan-Delhi.  Under him, Ahirwal covered present day districts of Rewari, Mahendergarh, Narnual, Charkhi Dadri, Hissar, Jhajjar, Rohtak, Mewat ,Gurgaon, Najafgarh, Dwarka, Bahadurgarh, Rohini, Palam, Alwar and Jaipur.