What is the name of the person shown in the picture who was the leader of Kanpur in the Revolt of 1857?

Nana Sahib.

In Kanpur, the sepoys and the people of the town gave Nana Sahib, the successor to Peshwa Baji Rao II, no choice but to join the revolt as their leader. In Jhansi, the rani was forced by the popular pressure around her to assume the leadership of the uprising. So was Kunwar Singh, a local zamindar in Arrah in Bihar. In Awadh, where the displacement of the popular Nawab Wajid Ali Shah and the annexation of the state were still very fresh in the memory of the people, the populace in Lucknow celebrated the fall of British rule by hailing Birjis Qadr, the young son of the Nawab, as their leader.