The family story about the Wilson family being approached for the movie is a bit puzzling since neither of the books but Carter mention Bill Wilson. I don't know why they would have been approached or for what reason. I do know where the tree is you mentioned but I haven't had a chance to go see it. The references you gave for the Wikiapedia information about Josey Wales do not relate to Bill except the one from Bruce Nichols which I had a difficult time looking for and still yet to find. I'll have to send Bruce a email and ask him about it. I searched the Missouri Civil War Message board but found nothing about Bruce's article or comments. I'm unsure about the Wikipedia posting as to who is responsible for the information about Josey Wales. There is so little about Bill out there, I am wanting to seperate the fact from fiction and find as much historical evidence about Bill as I can.