High Quality Content by WIKIPEDIA articles! Petrine Privilege, also known as the Privilege of Faith or a decree in favor of the faith, is a provision in the Canon Law of the Roman Catholic Church granting a previously married person the right to marry under certain specific circumstances. The implementation of this procedure is reserved to the Pope. In essence, the Petrine Privilege is an extension of the logic of the Pauline privilege to cases of marriage between baptised and non-baptised spouses.