Jim, You might try the cemetery in Arco, Idaho, Butte Co., the county joining Custer Co. My brother John Edward Vaught is buried there. He was the grandson of A.C. Vaught
and g-grandson of David, gg-grandson of John H. Vaught of Roan Creek, Tenn. Don't know if more are buried there, but I do know there were some Vaughts in Mackay(Custer Co.).
I lived in Arco for a few years. I may know some people to contact in you're interested.