Wis. Stat. § 767.18
Current through Acts 2023-2024, ch. 272
If the validity of a marriage is denied or doubted by either of the parties the other party may commence an action to affirm the marriage. The judgment in an action to affirm marriage shall declare the marriage valid or annul the marriage, and is conclusive upon all persons concerned.
Wis. Stat. § 767.18