The founder of the Sur dynasty was Sher Shah, whose original name was Farid. He was the son of Hasan Khan, a jagirdar of Sasaram in Bihar.
Sher Shah waged extensive wars with the Rajputs and expanded his empire. His conquests include Punjab, Malwa, Sind, Multan and Bundelkhand.
His empire consisted of the whole of North India except Assam, Nepal, Kashmir and Gujarat.