My great grandpa is Edwin C. Killingsworth, who is the son of Raymond Austin Killingsworth (b.1870 IA d. 1934 Dallas, TX) and Martha E. Hamilton (b. 1873 MO d. 1960 Dallas, TX). Raymond Austin Killingsworth was the son of Austin Killingsworth (b. 1837 Tennessee d. 1870-1880).
This is all I know. I am trying to get more information.