Public propriety
Jus novum c. 1140-1563
Jus novissimum c. 1563-1918
Jus codicis 1918-present
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In the canon law of the Catholic Church, the impediment of public propriety, also called public honesty or decency, is a diriment impediment to marriage, a prohibition that prevents a marriage bond from being formed. It arises from a valid betrothal between the male party to the contract and the blood relatives of the woman in the number one degree mother, daughter, sister, and conversely between the woman and the blood relatives of the man in the same measure father, son, brother. once existing, the impediment always remains, even though the betrothal is lawfully broken.
Second, this impediment, for a stronger reason, arises from a marriage contract, where the marriage was not consummated, even if the marriage be invalid, unless the invalidity be due to lack of lawful consent. In cases where the marriage is consummated, public decency helps way to affinity.