JohniK, I had a customer once whose name was John Mary (something).
Her dad was drunk when he registered her, and the Registrar wouldn't alter the certificate, except from M to F. He did unbend enough to add the Mary underneath the John. She was quite proud of it, and showed me the birth certificate.
John and Mary. Not an imaginative man.
This was in England, in case anyone should think only Americans were barmy.