He married 5 November 1879, Helen M. "Minnie" Bryant, born 12 February 1851 and died ca 1943. They are both buried in Union Cemetery, Adams Center, Jefferson County, New York.
Danford served in the Civil War in Co. B., 10th N.Y.H.A., and is listed as a farmer in the 1890 Business Directory of Adams Center.
Children of Danford George and Helen M. (Bryant) Oatman:
3400 Jennie, b. 20 Jan 1881; d. 6 Feb 1881; bur. Union Cem., Adams Center, NY
3401 Clyde Danford, b. 1 Mar 1882; m. Rachel Louise Valkenburg
3402 George Edward, b. 13 Apr 1884; d. 12 Feb 1901; bur. Union Cem., Adams Center, NY
Major Clyde Danford Oatman, U.S.A.
1890 Business Directory of Adams Center, NY
Cemetery records, Adams Center, NY
1880 census, Adams, Jefferson Co., NY