My 2nd great grandmother was Amelia James Dixon and her brother was C.J. Dixon, both born in South Carolina. The C. first initial might be Columbus. Amelia married Joshua T. Ansley in Georgia and they, along with brother C.J. were in Milam CO, Texas by the time my great grandfather was born on June 26, 1856.
Might they fit into your line or can you share the marriage database to that I might check it?