The model for arguably the most famous painting in the world entitled "Mona Lisa"; alternatly named "La Gioconda" meaning light-hearted woman, derived from the surname of her husband; Francesco di Bartolomeo di Zanoli del Giocondo whom refused to pay for the painting. It was finished in 1505 and rumored to have been further worked on by Leonardo Da Vinci over a course of many years before being acqured by Fran├žois I after his death in 1519.