If a man has two wives, one loved and the other unloved, and if both the loved and the unloved bear him sons, but the firstborn is the son of the unloved wife: when he comes to bequeath his property to his sons he may not consider as his firstborn the son of the wife he loves, in preference to the son of the wife he does not love, the firstborn. On the contrary, he shall recognize as his firstborn the son of the unloved wife, giving him a double share of whatever he happens to own, since he...