“It was to the Iles Sainte-Marguerite that the famous prisoner with the iron mask whose name has never been discovered, was transported at the end of the last century; very few of those attached to his service were allowed to speak to him. One day, as M. de Saint-Mars was conversing with him, standing outside his door, in a kind of corridor, so as to be able to see from a distance everyone who approached, the son of one of the governor’s friends, hearing the voices, came up; Saint-Mars quickly closed the door of the room, and, rushing to meet the young man, asked him with an air of great anxiety if he had overheard anything that was said. Having convinced himself that he had heard nothing, the governor sent the young man away the same day, and wrote to the father that the adventure was like to have cost the son dear, and that he had sent him back to his home to prevent any further imprudence.
“I was curious enough to visit the room in which the unfortunate man was imprisoned, on the 2nd of February 1778. It is lighted by one window to the north, overlooking the sea, about fifteen feet above the terrace where the sentries paced to and fro. This window was pierced through a very thick wall and the embrasure barricaded by three iron bars, thus separating the prisoner from the sentries by a distance of over two fathoms. I found an officer of the Free Company in the fortress who was nigh on fourscore years old; he told me that his father, who had belonged to the same Company, had often related to him how a friar had seen something white floating on the water under the prisoner’s window. On being fished out and carried to M. de Saint-Mars, it proved to be a shirt of very fine material, loosely folded together, and covered with writing from end to end. M. de Saint-Mars spread it out and read a few words, then turning to the friar who had brought it he asked him in an embarrassed manner if he had been led by curiosity to read any of the, writing. The friar protested repeatedly that he had not read a line, but nevertheless he was found dead in bed two days later. This incident was told so often to my informant by his father and by the chaplain of the fort of that time that he regarded it as incontestably true. The following fact also appears to me to be equally well established by the testimony of many witnesses. I collected all the evidence I could on the spot, and also in the Lerins monastery, where the tradition is preserved.
“A female attendant being wanted for the prisoner, a woman of the village of Mongin offered herself for the place, being under the impression that she would thus be able to make her children’s fortune; but on being told that she would not only never be allowed to see her children again, but would be cut off from the rest of the world as well, she refused to be shut up with a prisoner whom it cost so much to serve. I may mention here that at the two outer angles of the wall of the fort which faced the sea two sentries were placed, with orders to fire on any boat which approached within a certain distance.