All marriages within the prohibited degrees of consanguinity as set forth in this part are voidable, but, when any of these marriages have not been dissolved during the lifetime of the parties, the unlawfulness of the marriage shall not be inquired into after the death of either of the parties to the marriage.
23 Pa.C.S. § 1703
Marriage within degree of consanguinity
Known as the Domestic Relations Code
The act spans §§ 23-101 to 23-8415 (374 sections).
Official source: Pennsylvania General Assembly. Reproduced from public-domain Pennsylvania statutes; confirm against the official source for the current text. Not legal advice.