This building is where Nana Sahib coordinated his operations around the Cawnpore area. Nana Sahib was the adopted heir to Baji Rao II, the ex-peshwa of the Maratha Confederacy. The East India Company had decided that the pension and honours of the lineage would not be passed on to Nana Sahib, as he was not a natural born heir. Nana Sahib had sent his envoy Dewan Azimullah Khan to London, to petition the Queen against the Company’s decision, but failed to evoke any favourable response.
Some 300 British troops, their families and around 150 loyal sepoys were holed up in Gen Wheeler's entrenchment in Cawnpore (Kanpur) for three weeks in June 1857, were constantly bombarded by a local prince, Nana Sahib's army.