The son of immigrant English parents who settled in Utica but moved thereafter to New York, he married Jane Riker O'Brien.
He was a portrait, genre, and landscape painter. He was the first vice president, and later President, of the National Academy of Design.
A portrait of Whistler's father George Washington Whistler, by Inman, said to have been painted about 1843, is in Cincinnati Art Museum. The following year he spent in England.
'Inman, Henry', National Gallery of Art website. 'Henry Inman (painter)', Wikipedia. 'Henry Inman', Encyclopedia Brittanica, online.