[3][4] According to Hindu mythology, Zamania was the place where Rishi Jamadagni (father of Lord Parashurama) had his ashrama.

In 1750s the importance of the town was removed by Nawab Fazl Ali Khan, a Nawab of Ghazipur, but later, a notable zamindar of Zamania, Chaudhari Muhammad Azmal reestablished its importance and redeveloped the town.

Although during Mughal era much of the places in current day tehsil of a part of Diladarnagar Kamsar, home of Kamsari pathans who had a strong hold over this area, with its administrative head being at Sewrai, but when the town of Zamania was made a subdistrict many of the places in Diladarnagar Kamsar was added in here.

The hero of the first Freedom Movement (popularly referred to as Sepoy Mutiny) Mangal Pandey was born here.

The British did eventually put down the uprising, but not without tarnishing their reputation by using offensive techniques against the mutineers.

The people here also took great part in the revolt of 1857 lead by Kunwar Singh of Jagdishpur.