Affinity
kinship created as a result of someone's marriage with blood relatives of the other spouse / From Wikipedia, the free encyclopedia
In law, affinity is the kinship relationship that exists between two or more people as a result of somebody's marriage.[1] It is different from consanguinity (blood relationship).[1] Affinity is the relationship which each party to a marriage has to the relatives of the other partner to the marriage. But affinity does not cover the marital relationship of the parties to the marriage themselves.