In re Marriage of Barnes

Illinois Appellate Court enforced a prenup signed shortly before the 1991 wedding where both parties had separate counsel, emphasizing that voluntariness is measured by what the parties foresaw at signing.

Why this case matters

Barnes is the most-cited Illinois appellate decision on prenup voluntariness. It crystalizes the practical advice: get independent counsel, take real time to review, document the timeline. For Illinois readers, the case is a roadmap for how to make a prenup that holds up.

The facts

The Barnes signed a prenup shortly before their 1991 wedding. Each had separate counsel. At divorce, the wife challenged the agreement as involuntary and unconscionable.

The holding

The Illinois Appellate Court enforced the prenup under the Illinois UPAA. The court emphasized that the absence of coercion or duress, time to review the agreement, and access to independent counsel all weigh heavily in favor of voluntariness. "Undue hardship" is measured by what the parties foresaw at signing — not by how the marriage actually unfolded.

What it means for you

• Illinois enforces prenups when both parties had separate counsel and meaningful time to review.
• Hardship that develops during the marriage is generally not grounds to invalidate.
• The voluntariness analysis is anchored at the moment of signing.
• Separate counsel for both spouses is the most reliable defense in any later challenge.

Primary source

The full opinion is available at: https://www.leagle.com/decision/2001856324illapp3d5141812

Illinois prenup law in context

Illinois prenups are governed by 750 ILCS 10/1 et seq. — official statute text. For the full cost breakdown, attorney rate ranges, and procedural requirements, see the Illinois prenup cost guide.

To check whether your specific situation has the kind of risks In re Marriage of Barnes identifies, take the 60-second prenup quiz — it applies Illinois-specific rules to your answers.

A note on legal citation

This page summarizes a published court opinion for educational purposes. We aim for accuracy but recommend reading the primary source linked above for the controlling text. Court opinions can be modified, distinguished, or overruled by later decisions; for current law, consult a family law attorney licensed in Illinois.