I have been researching John W & Annie E Blankenship for some time and finally got a little breakthrough, but I need some help.

I have them in Lauderdale, Tennessee in the 1850 census.
They are in Lamar County, Texas in 1880 (Precinct 1).
Today I found them (at least I think it is them) buried in the Grove Hill Cemetery near Leonard, Fannin Co, Texas.

The listing is:
John W Blankenship - 30 Nov.1921-22 Apr.1910 a Mason
Annie E Blankenship - wife of John 20 Nov.1826-22 Feb.1902

In the will of D D Vaden (my wife's g-g-g-grandfather), he list Elizabeth Ann Blankenship as one of his children. I believe this is the same person.

John's parents are Josiah & Matilda Blankenship
Annie's parents (I believe) are D D & Mickey (Micha) Blankenship Vaden.

Can anyone provide me with any information on these folks.

Any help would be greatly appreciated.