1. A native of London, Walker had immigrated to America before the American Revolution and settled in New York City. During the war he had served as aide-de-camp to Baron von Steuben. In 1786 he was appointed commissioner to settle the accounts of the hospital, marine, and clothing departments, and in following years he served as naval officer of New York and as a director of the Society for Establishing Useful Manufactures. Walker was also closely associated with Steuben’s and William Duer’s business interests. See Medad Mitchell to H, February , 1792, note 1. In May, 1795, Walker became a representative of the Pulteney Association (also known as the Pulteney Associates, London Association, and London Associates), which speculated in lands in the Genesee country of western New York. For his connection with the Pulteney Association, see Walker to H, September 15, 1793.