I realize this is an old thread, but I just wanted to reply in case you're still checking in on it.
I have just recently begun researching this potential site. If the tales are true, it would be a little more than 2 hours from where I'm located in Nashville, TN.
I used to live in Maryville from 82 to 98.. that name sure rings a bell.. sounds like a rural part of Blount or Knox county.
I've got an old map I found on the web when I was researching an 18th century Fort in between Maryville and Seymour.. I'll look for it and post back what I find.