1 son, Henry Walton. Partner, Grinnell, Minton & Company (became one of strongest merc. houses in New York City), 1825-1850 United States Manager for Liverpool & London Insurance Company for a number of years. Bore entire expense of outfitting vessels Advance and Rescue for Franklyn Polar Expedition. Outfitted expedition sent in search of Sir John Franklyn under command of Lieutenant E.J. DeNaven, 1850 (DeNaven discovered land at latitude 80° N. which became known as Grinnell Land, but did not find Franklyn), helped send 2nd expedition under ship Advance (attained highest latitude ever achieved by sailing vessel).
A founder American Geography and Statistical Society, president, 1862-1863.
Born February 13, 1799