He married in 1874, Mary, daughter of George and Jane Wooddell; she was born in 1848 and died 31 March 1925.
Per the 1875 state census, Benjamin D. Oatman, a Belcher carriage and wagon maker, processed 3,000 lbs. of iron and timber; he made 4 wagons for $100 each and 10 carriages for $125 each.
Children of Benjamin D. and Mary (Wooddell) Oatman:
1701 George B., b. 9 Jan 1876; d. 1944; m. Ida May Mitchell
1702 Seldon B., b. 5 Sep 1880 (1880 census says b. May 1880); d. 18 Apr 1954; m. Jane Conety
1703 Benjamin, b. 5 Sep 1883; d. 23Mar 1974, Granville, Washington Co., NY; m. Emma Rogers. Both buried Morningside Cem., Hartford, NY. No children.
Oatman Bible and family records
Gravestones, Hartford, NY, cemetery
Social Security Death Index
1880 soundex and census, Hartford, Washington Co., NY
Hebron Preservation Society, Hebron, a Century in Review