[1] They were born into a family of Bhogta clan of Kharwar tribe in the village Chemo-Senya in Latehar district, a Chotanagpur plateau region of Jharkhand.
They decided to declare themselves independent of company rule, inspired by the Doronda Revolt in Ranchi led by Thakur Vishwanath Shahdeo and Pandey Ganpat Rai.
On 21 October, 1857, 500 people, led by Nilamber and Pitamber, attacked Raghubar Dayal, who had sided with the British, at Chainpur.
To suppress further revolts, Commissioner Dalton arrived in Palamu from Ranchi with Madras Infantry, Ramgarh cavalry and soldiers of the Pithoria Parganait on 21 January, 1858.
Edward Tuite Dalton got Babu Kunwar Singh's letter to Nilambar and Naklait Majhi, who had asked for immediate help.