Man in the Iron Mask There was also Nicolas Fouquet, Marquis of Belle-Île, a former superintendent of finances who had been jailed by Louis XIV on the charge of embezzlement, and the Marquis de Lauzun, who had become engaged to the Duchess of Montpensier, a cousin of the King, without the King's consent. Fouquet's cell was above that of Lauzun. In his letters to Louvois, Saint-Mars describes Dauger as a quiet man, giving no trouble, "disposed to the will of God and to the king", compared to his other prisoners, who were either always complaining, constantly trying to escape, or simply mad. Dauger was not
Man in the Iron Mask Saint-Mars announcing the imminent arrival of the prisoner who would become the "man in the iron mask," Louvois gave his name as "Eustache Dauger" and historians have found evidence that an Eustache Dauger was living in France at the time and was involved in scandalous and embarrassing events involving people in high places known as l'Affaire des Poisons. His full name was Eustache Dauger de Cavoye. Records indicate that he was born on 30 August 1637, the son of François Dauger, a captain in Cardinal Richelieu's guards. François was married to Marie de Sérignan and they had 11 children, nine