“When the Church banned marriage to in-laws, classifying them as “siblings” to make such unions incestuous, the bonds between kin-groups were broken by the death of either spouse, since the surviving wife or husband was prohibited from incestuously marrying any of their affines.”

“When the Church banned marriage to in-laws, classifying them as “siblings” to make such unions incestuous, the bonds between kin-groups were broken by the death of either spouse, since the surviving wife or husband was prohibited from incestuously marrying any of their affines.”

— Joseph Henrich