Canon 780

1. Even if only one party is Catholic, the marriage of Catholics is regulated not only by divine law but also by canon law,

with due regard for the competence of civil authority concerning

the merely civil effects of such a marriage. 2. In addition to

divine law, marriage between a Catholic and a baptized non-Catholic is also regulated by: (1) the law proper to the Church

or ecclesial community to which the non-Catholic belongs, if that

community has its own matrimonial law; (2) the law that binds

the non-Catholic, if it is an ecclesial community, if proper matrimonial law is lacking.