<br />The Iron Mask was an individual whose identity has never really been ascertained and which of the historical records say he was a prisoner during the reign of Louis XIV of France. Among the authors who took an interest in his case were Voltaire above all and Alexandre Dumas father, who made him a character in the novel The Viscount of Bragelonne. Numerous films were inspired by that episode of Dumas&#39; novel, with varying degrees of fidelity. Casanova also mentions the Iron Mask in his biographical work History of my life, in Chapter XXIV, where he affirms that his French teacher, Cr&eacute;billion, the old man who had been Royal Censor, received from King Louis XIV the confidence that he was not no iron mask ever existed and that it was a legend. It is also said that it was a minister of the Duke of Mantua, named Mattioli, who was simultaneously in the service of Louis XIV and would have betrayed him.<br />&nbsp;