He participated in the rebellion of 1857 against East India Company supporting the rebel soldiers under Babu Amar Singh.
[1][2][3] On 6 June 1858, Amar Singh and his troops of 2000 sepoys and 500 sowars arrived in the village of Gahmar in Ghazipur which is situated near the border with Bihar.
They exchanged supplies including arms aid and Amar Singh left from Gahmar village on 10 June 1858.
[4] By the end of December 1858, rebel forces had faced disintegration under continuous military action against them by British troops.
Meghar Singh along with his followers escaped to Nepal but the local rulers didn't gave them refuge.