You cannot appeal the fact that you signed something. You can only appeal a court order.
Certainly, especially if the grandfather has no living children at the time of his death, or if his will leaves something to the grandson. If there is no will, and there are living children, whether the grandson would get anything depends on the inheritance laws of the locality where the grandfather was a resident at the time of his death.
Your grandfather's children are either your parents or aunts or uncles.
Their grandfather baked cookies, and the children ate them all.
Your grandfather's sister's children are your 'first cousins once removed'.
The children of your grandfather's brother are your first cousins, once removed. You can also call them by their names.
Only if the children and grandchildren of that great grand father are/were registered US citizens living abroad and you have the documents to prove that.
Inheritance
Inheritance.
If the individual was married than their spouse will receive the inheritance. If there is no spouse, then the children is next in line, followed by grandchildren.
No.
alexzander
Children in nonlegal unions may face challenges in terms of inheritance rights, access to benefits, and legal protection if the relationship dissolves. Without the legal recognition of their parents' union, children may encounter difficulties related to custody, support, and other legal matters that can impact their well-being.