The affection which a husband, a father, a brother, or other near relative, naturally feels towards those who are so nearly allied to him, sometimes supplies the place of a valuable consideration in contracts; and natural affection is a good consideration in a deed For example, if a father should covenant without any other consideration to stand seised to the use of his child, the naming him to be of kin implies the consideration of natural affection, whereupon such use will arise.