I can recommend a landman to you to determine the actual status of your mineral estate. You may also have probate issues. I know a lot of landmen, but the one whom I trust most is Lyle Stanka, in Yukon I believe. He pulled me out of a pickle when another landman simply wasn’t getting the job done when I hired him to ID a large estate that I was appraising. I have an email address but don’t like to post those, so send me a message or check phone book in OKC area.