In the 18th century people were still executed for incest even when they were not related by blood, because relations by marriage were considered by religious criteria to be equivalent to blood relatives.
В XVIII веке людей по-прежнему казнили за инцест, даже если они не были связаны кровными узами, поскольку брачные узы считались, согласно религиозному учению, эквивалентным кровному родству.