I think I can help a little with regards to John G. Burnett. I am a direct descendant of his on my Dad's Mom's side. I'm not sure if the info I have is 100% accurate...I have had trouble finding info on the Burnett in my family. John G. Burnett married Letitia Godsey. I don't know exactly how many kids they had, but they did have at least one son, John A. Burnett. John A. married Ellen Melissa Miller in 1867. They had at least one daughter, Lissie Lyn Burnett. She was born in 1886 in Sullivan County, TN. She was my Dad's mother. She married Evans Porter Massengill. I'm not sure when. If you have ANY other info please pass it along. I was thrilled to read your post.