He married 1) Ann Jane _____, who was born 2 April 1816 and died 2 September 1859 and is buried next to David in Oak Grove Cemetery.
He married 2) Julia C. Anderson, daughter of Daniel and Nancy (Patrick) Anderson; she was born 31 March 1827 in New York, and died 14 September 1898 in Napoleon. She was the widow of George Elliot.
David and Ann were in Columbia, Jackson County, Michigan, in 1850, where he was a farmer. By 1860 Ann had died and their son, Lawrence, was living with Reuben and Eliza Andrews in Napoleon.
Children of David W. and 1) Ann Jane Oatman:
970 Lawrence, b. 1847, MI; d. 11 Apr 1870, age 23; bur. in Oak Grove Cemetery, Napoleon, Jackson Co., MI, with his parents. Lawrence was living with Reuben and Eliza Andrews in 1860 in Napoleon, MI. It is said he served in the Civil War under the name Lawrence Youngs.
Sources:
Louise Carpenter, Jackson, MIBack to Oatman Home Page
Will and estate papers of David W. Oatman
1850, 1860 census, Jackson Co., MI
Records of Oak Grove Cemetery, Napoleon, MI
Death records of Napoleon, MI