Consanguinity
Consanguinity ("blood relation", from the Latin consanguinitas) means being of the same kinship as another person. Consanguinity also means being descended from the same ancestor as another person.  The laws of many jurisdictions set up degrees of consanguinity when prohibiting sexual relations and marriage. Rules of Consanguinity are also used to determine heirs of an estate. These are according to laws that govern intestate succession. These vary from jurisdiction to jurisdiction.