1. I regret to say that unless the father actually owned the land upon which he worked, then there is nothing to inherit upon his death. Ownership of the land is a necessary pre-requisite before a child can inherit anything. If the land was owned by your grandmother or his mother, then there are no rights of inheritance upon your father's death. You cannot inherit what your father did not own. Your father should have negotiated some ownership rights with his mother during his life in order that his children might inherit. Now you will just have to negotiate with your grandmother about inheriting something given the work your father did upon the land.