He has passed his entire life upon the farm where his grandfather settled about 1793. He attended the district schools and helped his father in carrying on the farm until the latter's decease, after which the estate was managed by himself and brother. "He has been a tireless worker all his life and eminently successful, being considered by his fellow-townsmen to be one of the most prosperous farmers in the neighborhood. Mr. Stewart has long been prominently identified with local public affairs, having served the town for many years as selectman and assessor, and has been a Representative to the State Legislature ; he is also an active member of the Methodist Church (Severance, B. Frank. Genealogy and biography of the descendants of Walter Stewart of Scotland and of John Stewart who came to America in 1718 and settled in Londonderry, N.H. Greenfield, Mass. : T. Morey & Son, 1905, pg. 153-154).
Findagrave.com states he had an adopted daughter named Edith Thayer.