This fine looking gentleman is Charles H. Sinclair, a documented Halifax, Nova Scotia cabinet maker. He lived and worked at 34 and 42 Barrington Street, Halifax between 1864-1869. Listed in the N.S. Archives in 1. Early Cabinet Makers and their families. 2. Antique Furniture of N.S. Craftsmen on page 130. Artist unknown. image size 25" x 30". Seems to be original frame.
Martin Osler Antiques is located in Toronto, Ontario