Hammir Dev Chauhan was a direct descendant of Prithviraj Chauhan. He was an Agnivanshi Rajput. Hammir ruled over Ranathambore from 1282 to 1301. Hammir's grandfather Vagbhatta ruled from 1237 to 1253 and Hammir's father Jaitrasinha ruled from 1253 to 1281 AD. Later Hammir's grandson Takshah Singh founded Rajkunwar(rajkumar) branch of Chauhan Dynasty which ruled parts of Awadh.