 During this period, Kellogg also returned to the practice of law, in partnership with his oldest son William, Jr., in Peoria.In 1871, William Kellogg was retained by the Distiller's National Convention to provide legal counsel to that organization.William Kellogg died in Peoria, Illinois, on December 20, 1872, and was interred in Springdale Cemetery and Mausoleum in that city.