Henry Thompson Sloane (December 1, 1845 – September 18, 1937)[1] was an American businessman during the Gilded Age.

[6] Sloane entered Yale College with the class of 1866, but left at the close of the first term of his senior year due to ill health.

[21] After a month's illness, Sloane died of pneumonia at the James T. Shewan house in Southampton, New York (which he had rented for the season) on September 18, 1937.

[24][25] After the divorce, he rented the house to Joseph Pulitzer and, in 1901, he sold it to banker James A. Stillman and moved to 18 East 86th Street.

[26] Through his daughter Jessie, he was the grandfather of Diana Dodge (1910–1977), who married Frederick Martin Davies, a grandson of Daniel O'Neill, owner of the Pittsburgh Dispatch.

[b] Through his daughter Emily, he was the grandfather of Amicie (née de La Grange) de Nicolay, Marie de La Grange (1919–1983),[28] who married Henry Baldwin Hyde in 1941 (son of James Hazen Hyde and namesake and grandson of Henry Baldwin Hyde, the founder of The Equitable Life Assurance Society of the United States),[29] and Henry-Louis de La Grange (1924–2017), a musicologist and biographer of Gustav Mahler.