Aged 25 years. Son of Jonathan and Martha (Ricker) Wallingford. He and his three sisters were adopted by his aunt Olive (Wallingford) Jackson and uncle Samuel Jackson.
Henry served in WWI in the 75th Division of the American Expeditionary Forces. He was a resident of Kittery when he enlisted in Kennebunk on 2 May 1918. He served in many areas but finally in Co. A. 39th Infantry. He was overseas from July 8, 1918 until his death on November 28th. He fought engagements at St. Mihiel and Meuse-Argonne.
He was buried December 21, 1920.
