There has in the past been some confusion about the identity of the sitter in this very good late 18th century British portrait, but this can now be laid to rest.
The (probably mid 19th century) label on the back initially turns the researcher towards the surnames Smeaton and Allanby. The small family tree below shows that there was an Allanby - Smeaton connection in the 18th century, when a John Allanby of Flimby in Cumbria married a Jane Smeaton.
JOHN ALLANBY (1750-1829) – m – JANE SMEATON (1750-1843)
Christoper Gibson Allanby (b 1789)
Barbara Allanby ... marries a John Walker
John William Allanby (b 1794) ... emigrates to Tasmania
Margaret Allanby (1797-1873) ... marries a Thomas Walker
Joseph Stamper Allanby (b 1799)