Well, I have one for ya.
Throughout my parents marriage, they've always laughed about my dad claiming he was 18 when they applied for their marriage license - even though he was only 17. They always just laugh and say, "We were just kids!" My dad said he was too embarrassed to have his parents sign for him so he just lied about his age.
Fast forward a few decades -
When my youngest daughter was in law school, and started studying family law, she called me one day and said, "Grandma and grandad's marriage license was null and void from the start. As a minor, he couldn't give consent for his marriage - only his parents could. By being a minor, and lying on the application - that nullified the license. They have a common law marriage."
So being a good sister that I am, lol, I told my sisters and we all vowed to not tell them because my mother would completely fall apart - for a lot of reasons. Plus there's the whole thing of her condemning common law marriage all her life and how to reconcile all that.
Fast forward a few months later - one of my sisters decided to go ahead and tell them.
As predicted, my mother fell completely apart.
For a while, I thought they might go ahead and do it again - get married. She was so upset over it. My daughter (the attorney) told them they were actually legally married because our state recognizes common law marriage as a legal marriage. I'm sorry, but that still didn't help her reconcile it. She hasn't mentioned it in a while - maybe because she has her mind on her cancer now, IDK, but talk about a shock - she sure got one when she found out her marriage was common law.