Review the paperwork which may be probate orders or deeds from a trustee. Keep in mind that there is a difference between having a right to inherit and being able to demonstrate that you are the mineral owner. As always, plan for the next generation through trusts or Transfer on Death Deeds.
Notice: Informational only. No attorney-client relationship is formed by this post. I am an Oklahoma-licensed attorney, but this is not legal advice. Do not share confidential facts in this public space.