Priests and all other persons bound by a solemn pledge of celibacy in the approved canonical manner are forbidden to contract marriage, unless they have first received the necessary canonical dispensation.
Persons already lawfully married cannot contract a new marriage.
Consanguinity and Affinity.—The following persons cannot contract marriage between themselves:
1. The ascendants and descendants by legitimate or illegitimate blood or affinity.
2. Collaterals by legitimate consanguinity up to and including the fourth degree.
3. Collaterals by legitimate affinity up to and including the fourth degree.
4. Collaterals by natural consanguinity or affinity up to and including the second degree.
5. The adopting father or mother and the adopted child; the latter and the surviving spouse of the adoptees, and the adopters and the surviving spouse of the adopted.
6. The legitimate descendants of the adopter with the adopted, while the relation of adoption continues.
7. Accomplices in adultery who have been judicially sentenced.