Henry F. Dunnels (1835-1924) was a lifelong resident of Ipswich, Massachusetts. He was a mariner and served as a gunner on the USS Agawam during the Civil War, where he was injured during the Second Battle of Deep Bottom in Virginia. He was a student of Mary Baker Eddy's husband, Asa G. Eddy, studying with him in 1878. He joined the Christian Scientist Association in April 1878 and was active in the Association until November 1878; records suggest he was expelled in June 1880 after a prolonged absence from meetings. Years later, in 1907, Dunnels was deposed as part of the Next Friends lawsuit.