I'm (almost) sure most of you know that the official name for Mona Lisa in France is "La Joconde", which comes from Giocondo as she was the wife of a rich merchant called Francesco del Giocondo. By marrying him, she became "la Gioconda" which became "La Joconde".

But then, why did most of the English speaking world take the habit of referring to her as "Mona (with only one "n") Lisa" while her official name (as posted inside the Louvre) is "Monna Lisa"? Wouldn't you like to know?