Yes, several times. The funniest was in my childhood when some kids at school seriously thought I was a popular cartoon girl. We had the same appearance and name, so these kids thought the cartoon character was inspired by me. They chased and bugged me for weeks until I signed autographs for them. Then they left me alone. XD
Have you ever thought you've invented something, only to find out at some point that someone already invented it decades before you?