I have found another possible child for Abner Smith & Sarah Rebecca Jackson. Found a Death Certificate.
"Bureau of Vital Statistics"
Texas State Board of Health
Standard Certificate of Death
Reg Dis No. 39231
Reg No 3353
Bexar County
San Antonio, Texas
Mrs. Mattie E. Belcher
423 W. Craig Plc
San Antonio, Texas
Date of Death: Dec 31, 1927
Date of Birth: 2 April 1844
Parents:
Abner Smith - Father Birth Loc. Tenn.
Sarah Jackson - Mother Birth Loc Tenn.