am looking for information regarding my GG-Grandfather, John S. Jackson, and his wife Laura A Malone. They lived for many years in Mount Vernon, TX. (census records show them as residents from 1880 to their deaths) There children included: John Thomas, Elizabeth, Cleone, and Gracie.

I am particularly interested in the names of their parents. I have states of birth, but not not where in the state - if that is listed anywhere. Also, any other information would be helpful.
Here is what I know thus far:
Full Name: John S. Jackson
Birth: Oct 1850 in Alabama
Death: 16 March 1926 in Mount Vernon TX
Parents were born in South Carolina according to census records.

Full Name: Laura A. Malone
Birth March 1854 in Georgia
Death: 16 Dec 1941 in Mount Vernon TX
Parents were from NC or SC.