Man in the Iron Mask arrested in Calais in 1669 further to the execution of Roux, who would have denounced him when being tortured. Hugh Ross Williamson argues that the man in the iron mask was the natural father of Louis XIV. According to this theory, the "miraculous" birth of Louis XIV in 1638 would have come after Louis XIII had been estranged from his wife Anne of Austria for 14 years. Furthermore, Louis XIII was old, weak, ill, and not expected to live much longer, and thus may have been impotent at the time, implying that he was not the father. The theory then
Man in the Iron Mask the enquiry the investigators were told about a supplier of poisons, a surgeon named "Auger", and Duvivier became convinced that Dauger de Cavoye, disinherited and short of money, had become Auger, the supplier of poisons, and subsequently Dauger, the man in the mask. In a letter sent by Louvois to Saint-Mars shortly after Fouquet's death while in prison (with Dauger acting as his valet), the minister adds a note in his own handwriting, asking how Dauger performed certain acts that Saint-Mars had mentioned in a previous correspondence (now lost) and "how he got the drugs necessary to do so". Duvivier