heir
nounThe man who succeeds, or is to succeed another in the possession of lands, tenements and hereditaments, by descent; the man on whom the law casts an estate of inheritance by the death of the ancestor or former possessor; or the man in whom the title to an estate of inheritance is vested by the operation of law, on the death of a former owner. We give the title to a person who is to inherit after the death of an ancestor, and during his life, as well as to the person who has actually come into possession. A man’s children are his heirs. In most monarchies, the king’s eldest son is heir to the throne; and a nobleman’s eldest son is heir to his title. Lo, one born in my house is my heir. Genesis 15:3.