What is the current state of the law in relation to the death of a member of the same family during his life?

the death of another family member during his life, violates common sense. Cf. Crumpton v. Gates, 947 F.2d 1418, 1422 (9th Cir. 1991) ("Assume parent and child were run over and killed by a driver who was at fault. While both estates could sue for wrongful death, neither could make out a claim for loss of familial companionship, for neither would appreciate the loss of the other.") (dicta).