[1] Saint-Mars au Ministre, June 4, 1692. The central problem remains unsolved. What had the valet, Eustache Dauger, done?[1] [1] One marvels that nobody has recognized, in the mask, James Stuart (James de la Cloche), eldest of the children of Charles II. He came to England in 1668, was sent to Rome, and "disappears from history." See infra, "The Mystery of James de la Cloche." III THE VALET'S MASTER The secret of the Man in the Iron Mask, or at least of one of the two persons who have claims to be the Mask, was "What had Eustache Dauger done?" To guard this secret the most extraordinary precautions were taken, as we have shown in the foregoing essay. And yet, if secret there was, it might have got wind in the simplest fashion. In the "Vicomte de Bragelonne," Dumas describes the tryst of the Secret-hunters with the dying Chief of the Jesuits at the inn in Fontainebleau. They come from many quarters, there is a Baron of Germany and a laird from Scotland, but Aramis takes the prize. He knows the secret of the Mask, the most valuable of all to the intriguers of the Company of Jesus. Now, despite all the precautions of Louvois and Saint-Mars, despite sentinels for ever posted under Dauger's windows, despite arrangements which made it impossible for him to signal to people on the hillside at Les Exiles, despite the suppression even of the items in the accounts of his expenses, his secret, if he knew it, could have been discovered, as we have remarked, by the very man most apt to make mischievous use of it--by Lauzun. That brilliant and reckless adventurer could see Dauger, in prison at Pignerol, when he pleased, for he had secretly excavated a way into the rooms of his fellow prisoner, Fouquet, on whom Dauger attended as valet. Lauzun was released soon after Fouquet's death. It is unlikely that he bought his liberty by the knowledge of the secret and there is nothing to suggest that he used it (if he possessed it) in any other way. The natural clew to the supposed secret of Dauger is a study of the career of his master, Roux de Marsilly. As official histories say next to nothing about him, we may set forth what can be gleaned from the State Papers in our Record Office. The earliest is a letter of Roux de Marsilly to Mr. Joseph Williamson, secretary of Lord Arlington (December, 1668). Marsilly sends Martin (on our theory Eustache Dauger) to bring back from Williamson two letters from his own correspondent in Paris. He also requests Williamson to procure for him from Arlington a letter of protection, as he is threatened with arrest for some debt in which he is not really concerned. Martin will explain. The next paper is indorsed "Received December 28, 1668, Mons. de Marsilly." As it is dated December 27, Marsilly must have been in England. The contents of this piece deserve attention, because they show the terms on which Marsilly and Arlington were, or, at least, how Marsilly conceived them.