Yes, I have talked to this son of Rudolphs. He was just at the Ruppe reunion this month. My husband was there too. He was so excited to find our family. He really would like to find the other brothers and sisters. He has met the one that lives back there and was at the reunion. He's the oldest one. It's the younger children that we would like to find and this one that found us is one of them. He lives in Indiana. He may visit us here in CA next year. I really don't think this Henry Ruppe of Ann's is any relation unless Rudolph used his Dad's name but he never did that with anyone else and I don't know of any of our relatives that lived in that part of TN. They are all in the eastern part.
One thing she could do is check with DMV for a person with that name and if he has a driver's license, it will give his address and birth date. I think you have to prove who you are and why you want to find the person. You can find the info on the internet. I'm going to write you soon but just haven't gotten around to it.