For years I have tried to find out, how and when the famous portrait painting of the Milanese Duchess Isabella of Aragon (1470-1524), nowadays wrongly called "Mona Lisa" - and I mean the Original which had been painted between the 19th May to the 19th August 1489 in the castle of Pavia -, did get to France. Leonardo da Vinci did most certainly not bring it to France in 1517, because his contemporary Antonio de Beatis tells us that it had already been at that time in the position of the French kings. Finally I found the answer: "[The French King Louis XII and since 1499/1500 also Duke of Milan] plundered the castle of Pavia of 27 portraits of members of the Visconti and Sforza families and took them to France for his wife." (in: Frederic J. Baumgartner: Louis XII, New York 1996, p. 165). Therefore already since 1499 or 1500 the Original of this famous portrait has called France its home.