About Daudnagar
Daudnagar town is a City Council cum Subdivisional Headquarter in Aurangabad district in the state of Bihar, India under Magadh division. Daudnagar is 200 year old historical city and its living proof is Daudnagar has old historical fort, this fort is situated on the eastern bank of the Son River. National Highway NH139 which connects Rajhara town of Palamu district to Patna passes through the town. Daudnagar was founded by Daud Khan, a Governor of Bihar under Aurangzeb in the 17th of Palamu fort from the Cheros; and it is said that while back from this conquest he camped here and founded the town known after him. The surrounding area was also granted to him as a Jagir by the emperor. Early in the 18th century Buchanan saw it as a flourishing town with cloth and opium factories. The sarai built by Daud Khan was, perhaps really meant to be a stronghold; for it was well fortified with a battlemented wall, two large gates and a moat all around. In the outlying part of the town called Ahmadganj is the tomb of Ahmad Khan.
Source : Wikipedia