Rebecca was the daughter of John Davis and Phamariah "Fanny" Farris Davis Wall. Rebecca's father died when she was young, and afterwards her mother married, Drury W. Wall, Sr. Rebecca was raised by her mother and step-father and lived with them for the majority of her life.
Rebecca's full siblings included Enoch H. Davis, Lewis "Luke" Davis, and Elmira M. Davis King. William A. Davis and John H. Davis are two other "possible" full siblings. Rebecca had one half-brother, Drury W. Wall, Jr. and several step-siblings including Mary Jane Wall Farley, Joseph Wall, Henry W. Wall, William Madison "Matt" Wall, and Joel Wall.
Rebecca was never married; however, she did have one child as follows:
1. Drury W. "Drew" Davis (born 1863, father unknown), married Martha E. Congo, daughter of Peter H. Congo and Susan Hunnicutt. Drury and Martha had the following children: (1) William A. Davis, (2) George Augustus "Grover" Davis, Sr., (3) Bular M. "Lula" Davis, (4) Leonard Guy Davis, (5) Oliver B. Davis, (6) Ollie Davis, (7) George W. Davis, (8) Ruby Davis, (9) Leo Davis, and (10) Jeff Davis.