Kosal Dev Singh
Kosal Dev Singh was the grandson of Anangpal Tomar, the last Hindu king of Delhi, and the son of Ausan Singh/Kesri Singh who was king of Patan, Alwar. According to the Haryana State Gazetteer, Singh founded Kosli, a large Chandravanshi Yadav village in 1193 A.D. He was said to have met sage Baba Mukteshwar Puri, Kosli, who was engaged in meditation under dense shrub jungle.