Depends on where you live.
This is what English law says about it:
Section 12 of the Matrimonial Causes Act 1973 provides the ground for a voidable marriage. A marriage is voidable if it has...
In all cases except for Anne of Cleves. He sired three children - Mary, Elizabeth and Edward who were born to Katherine of Aragon, Anne Boleyn and Jane Seymour respectively. His marriage to Anne of...