Virginia Ann Hawkins Mabrey wrote a Genealogy regarding the Langford Family, she has John Langford 1750 SC - 1800 TN married to Martha Duke as the parents of John Langford 1788-1860 and Rufus Wiley Langford 1800-1876 Found the book in the Cookeville Public Library, I made copies of the pertinent pages. Have not, as yet, verified the information. Guille