My great grandparents were Herbert Barker b. Dec 10 1887 d.abt 1937 and wife Nina Wallace b. sept. 1893 d. Dec10 1924 Martin MN. Herbert was part Cherokee. They had 4 children. Donald, Nondus(Nonnie), Milt, and Carmon. Do any of these name match ones you have? I don't know Herberts parents names but I do know a lot about Nina Wallace.