A void marriage is a type of
marriage which is on its face
unlawful under the laws of the jurisdiction where it is entered, or potentially where the persons who contracted the marriage normally reside. Such a marriage is
void, meaning legally it has no effect, if the marriage violates certain legal requirements. A void marriage is "one that is void and invalid from its beginning. It is as though the marriage never existed and it requires no formality to terminate."
See more at Wikipedia.org...
One of two types of marriages that can be annulled. A void marriage is one that is void and invalid from its beginning. It is as though the marriage never existed and it requires no formality to terminate it. For instance, an incestuous marriage would likely be considered void.