Wisconsin law takes a nuanced approach to cousin marriages, distinguishing between first cousins and more distant relatives. Unlike some states with outright bans, Wisconsin permits certain cousin unions while prohibiting others. This guide breaks down the rules, exceptions, and key considerations to help you understand your rights.
Wisconsin’s Marriage Prohibitions: The Basics
Under Wisconsin Statutes § 765.03, the state strictly forbids marriages between close blood relatives to prevent incest and genetic risks. Prohibited relationships include parents with children, siblings, grandparents with grandchildren, aunts/uncles with nieces/nephews, and step-relations in direct lines (e.g., stepparent-stepchild).
First cousins fall outside this core list, meaning first-cousin marriages are legal in Wisconsin. You can obtain a marriage license from a county clerk without issue, provided both parties are 18+ (or meet emancipated minor rules) and meet standard requirements like no bigamy or mental incapacity.
This aligns with about half of U.S. states. For context, states like Texas ban first-cousin marriages entirely, while California allows them without restrictions.
First Cousins vs. Other Cousins: Key Distinctions
Not all cousin relationships are equal under the law:
- First cousins: Legal to marry. Sharing about 12.5% DNA, they share grandparents but not parents.
- First cousins once removed: Legal (e.g., your parent’s first cousin or your first cousin’s child).
- Second cousins: Fully legal and even less restricted, sharing great-grandparents.
The statute focuses on “direct lineal” and immediate collateral kin (siblings, etc.). Distant cousins face no barriers. Always verify degrees of relation via family tree tools or legal counsel, as miscalculations could lead to voided marriages.
Applying for a Marriage License: Step-by-Step
Wisconsin’s process is straightforward:
- Gather documents: Valid ID, proof of age, and divorce/death certificates if applicable.
- Visit county clerk: Apply in any Wisconsin county; no residency required. Fee: ~$100.
- Waiting period: None for most, but a 6-day wait applies if previously married in Wisconsin.
- Ceremony: Must occur within 30 days; officiant files the license.
No genetic counseling or blood tests are mandated for cousins, unlike some historical rules. Licenses are valid statewide.
Potential Risks and Exceptions
While legal, first-cousin marriages carry health considerations. Genetic counseling is wise due to higher risks of recessive disorders (e.g., 3-4% elevated chance per the National Society of Genetic Counselors). Courts won’t block the marriage but may scrutinize parental consent for minors.
Exceptions include:
- Adopted relatives: Adoption severs legal prohibitions unless blood ties persist.
- Half-cousins: Treated as full cousins; still legal.
Post-marriage, unions are recognized unless proven incestuous via DNA or records, which could lead to annulment under § 765.03(2).
Out-of-State Marriages and Federal Recognition
A Wisconsin first-cousin marriage is valid nationwide under the Full Faith and Credit Clause, but recognition varies. For example:
- Valid in cousin-friendly states like New York.
- Potentially ignored for benefits in ban states like Nevada (rarely enforced).
If marrying out-of-state where banned, Wisconsin won’t recognize it if it violates public policy.
Final Thoughts: Know Your Rights
Marrying your first cousin is not illegal in Wisconsin—it’s explicitly allowed. However, consult an attorney for personalized advice, especially with complex family ties or interstate moves. Laws evolve; check the Wisconsin Legislature website for updates.
SOURCES :
- https://mocobizscene.com/us-news/is-it-illegal-to-marry-your-cousin-in-wisconsin-heres-what-the-law-says
- https://dataminingdna.com/can-first-cousins-marry-in-wisconsin/
