Extract from the Work entitled “La Correspondance Interceptée,” by M. Lewis Dutens, published in 1789.
In order to treat this subject (that of the Iron Mask) methodically, I will begin with what the Duke de Choiseul has often related to me. Lewis the Fifteenth one day told him, that he was acquainted with the history of the prisoner with the Mask. The Duke begged the King to tell him who he was, but he could get no other answer from him, except, that all the conjectures which had been hitherto made with regard to the prisoner, were false. Some time afterwards, Madame de Pompadour, at the request of the Duke, pressed the King to explain himself upon this subject. Lewis the Fifteenth upon this told her, that he believed he was the Minister of an Italian Prince.