This is from the dispersed Warren Hastings Album, formely in the collection of Sir Thomas Phillips Bt (1792-1872). It was broken up and sold at Sotheby's 27 November 1974.
Warren Hastings (1732-1818) arrived in Calcutta in 1750 to serve in the British East India Company. He filled various official posts including Governor of Bengal, before being appointed Governor-General of India, 20 October 1774, a post which he held until 1788. See C.E. Buckland: Dictionary of Indian Biography, New York, 1968, pp.193-4.