About 1872, Halsey married Hannah Rowe, who was born 27 November 1836, and died 26 July 1909. The 1900 census states she had two children born and two living at that time, indicating they had another child.
Halsey's Last Will and Testament is dated 2 January 1912, in which he names Frank Hovey as Executor, and his only legatees are a son, Eddie Oatman, his sister Anna Averill and another sister, Melissa Parker. The court papers list the following as his heirs at law: Halsey, 18; Olga, 16; Thelma, 15; Harold, 11; Austin, 10; June, 7; and Eddie, 1. These are the children of Halsey's adopted son, Edward Merrick.
Children of Halsey and Hannah (Rowe) Oatman:
2750 Edward Merrick (adopted), b. 2 Jun 1888; d. 9 Jun 1940, Adams, Jefferson Co., NY; m. Marian "Minnie" Jimeson
Cemetery records of Adams Center, NYBack to Oatman Home Page
Will of Halsey Oatman dated 2 Jan 1912
Family records
Probate records of Halsey Oatman estate
1900 census, Adams, Jefferson Co., NY