Your posting is old but I'll try anyway.I have Harry Jackson Prothro as the son of William Alonzo "Bud" Prothro and Elizabeth "Betty" Jackson.Look for them in Gregg Co., TX.1880 census has children: John T., Harry J., Mary B., Abizena, and Willie.They also had a daughter, Annie Laura, b. 28 Jul 1880, d. 30 Apr 1943 in Tyler, Smith Co., TX, m. Sidney Rayford 16 Aug 1902. A daughter, Willie, m. L.A. Robbins 20 Jan 1895 Smith Co., TX."Bud" was the son of Emory Prothro and Frances Honace Thomason.
I would appreciate any information you have on this family.It is not my line but I am doing research for a fellow co-worker (Rayford).