Partner, Bigger and Warner, Architects, Seattle, WA, 1909-1910.

Member, Seattle Architectural Club, Exhibition Committee, 1910; (his name was written as "J.F. Warner" in the Seattle Architectural Club Yearbook 1910.)

Born in PA, In 1900, James S. Warner lived with his family in the 4th Ward of Erie PA. Warner lived as a lodger in a large Seattle rooming house in 1910; it is unclear what happened to Warner after leaving Seattle, WA.

His parents came from PA and VA. His father was James S. Warner, Sr., (born c. 1842), was a fire insurance agent in 1880. His mother, Rebecca Warner (born 06/1845), served as a single parent in 1900; both of her parents were Irish. In 1900, the Warner household consisted of three sons: Charles M. (born 02/1872 in PA), Spencer R. (born 06/1875 in PA), and James S. Warner, then a student. A servant, Selma Carlson, (born c. 1878 in Sweden) also lived with the family.