My question is about some of the complications of adoption in creating an heirship affidavit.
Two brothers of the sibling group. The younger brother has a son with young mother out of wedlock, but all involved make a plan to have the older brother and his wife legally adopt the younger brother’s new son. Done. Complete with a birth certificate issued with the new parents, the older brother and his wife.
Later in life the younger brother and the older share the truth of the bloodline parentage to the son/nephew. The son knows the birth father as uncle. The younger brother/uncle finally marries later in life and has a daughter, the only child. These two are now bloodline half siblings. In late life communications between the younger brother/uncle and the son/nephew, the younger brother/uncle verbally professes to the son/nephew that any future inheritance rights he may produce shall be shared equally between his daughter and the son/nephew. The younger brother/uncle then passes away. For the record, both of the son’s younger brother/uncle and the adopted father/uncle are now both deceased.
Now, an affidavit of heirship is being composed to submit on a mineral rights claim. The professed sharing of the heirship rights from the younger brother/uncle to the son/nephew is about to rear it’s head.
What is the the law and the true legal practice to settle this question in the how it gets resolved? If it can be resolved.