Whether affinity remains after the death of husband or wife?

Objections

Objection 1 : It would seem that affinity does not remain after the death of husband or wife, between the blood-relations of husband and wife or "vice versa." Because if the cause cease the effect ceases. Now the cause of affinity was the marriage, which ceases after the husband's death, since then "the woman . . . is loosed from the law of the husband" (Rm. 7:2). Therefore the aforesaid affinity ceases also.
Objection 2 : Further, consanguinity is the cause of affinity. Now the consanguinity of the husband with his blood-relations ceases at his death. Therefore, the wife's affinity with them ceases also.