Probably George, 3rd Earl of Pomfret (1768-1830); Thence by descent.
The right half of the composition should be compared to that of Wouwerman's At a Sutler's booth in Santa Barbara, University Art Galleries (see B. Schumacher, Philips Wouwerman, Doornspijk 2006, vol. I, p. 291, cat. no. A297, reproduced vol. II, plate 278).