I thought the term maiden name actually applied to women who were maidens.
A childhood belief about marriage

others believed things like this
- I used to believe that the term "being mugged" meant someone beat someone else with a coffee mug.— Matt Thiel
- i used to think that the term 'necking' referred to boyfriends and girlfriends who rubbed their necks togetherAnon
- I thought it was illegal for women to use Just For Men hair coloring— Brainhead
- When I first met my husband, he thought women didn't fart. He was really surprised after he met me!!!Anon
- My partner thought women used the brown packing tape as wax strips.— Helen
- When I was younger, I thought that Labour Day was when all sorts of women gave birth.— Greg