 October 18, 1818, Pratt married Beda Dickerman of Hamden, Connecticut, who died of tuberculosis six months later on April 19, 1819.Pratt and his brother Ezra then bought out Bennett's share of the tanning business for $2200.During the winter of 1819–20, Pratt and three of his neighbors went on a trading expedition to Canada to sell their leather and other goods.