For so perilous a treaty a negotiator was required, and the grand equerry proposed his friend, Viscount de Fontrailles, a man of wit, who detested the cardinal, and who would have considered it a simpler plan to assassinate him; he consented, however, to take charge of the negotiation, and he set out for Madrid, where his treaty was soon concluded, in the name of the Duke of Orleans. The Spaniards were to furnish twelve thousand foot and five thousand horse, four hundred thousand crowns down, twelve thousand crowns’ pay a month, and three hundred thousand livres to fortify the frontier-town which was promised by the duke. Sedan, Cinq-Mars, and the Duke of Bouillon were only mentioned in a separate instrument.
The king was then at Narbonne, on his way to his army, which was besieging Perpignan. The grand equerry was with him. Fontrailles went to call upon him. “I do not intend to be seen by anybody,” said he, “but to make speedily for England, as I do not think I am strong enough to undergo the torture the cardinal might put me to in his own room on the least suspicion.” On the 21st of April, the cardinal was dangerously ill, and the king left him at Narbonne a prey to violent fever, with an abscess on the arm which prevented him from writing, whilst Cinq-Mars, ever present and ever at work, was doing his best to insinuate into his master’s mind suspicion of the minister, and the hopes founded upon his disgrace or death. The king listened, as he subsequently avowed, in order to discover his favorite’s wicked thoughts and make him tell all he had in his heart. “The king was tacitly the head of this conspiracy,” says Madame de Motteville: “the grand equerry was the soul of it; the name made use of was that of the Duke of Orleans, the king’s only brother; and their counsel was the Duke of Bouillon, who joined with them because, having belonged to the party of M. de Soissons, he was in very ill odor at court. They all formed fine projects touching the change that was to take place to the advantage of their aggrandizement and fortunes, persuading themselves that the cardinal could not live above a few days, during which he would not be able to set himself right with the king.” Such were their projects and their hopes when the Gazette de France, on the 21st of June, 1642, gave these two pieces of news both together. “The cardinal-duke, after remaining two days at Arles, embarked on the 11th of this month for Tarascon, his health becoming better and better. The king has ordered under arrest Marquis de Cinq-Mars, grand equerry of France.”
Great was the surprise, and still greater was the dismay, amongst the friends of Cinq-Mars. “Your grand designs are as well known at Paris as that the Seine flows under the Pont Neuf,” wrote Mary di Gonzaga to him a few days previously.
Those grand designs so imprudently divulged caused a presentiment of great peril. When left alone with his young favorite, and suddenly overwhelmed, amidst his army, with cares and business of which his minister usually relieved him, the king had too much wit not to perceive the frivolous insignificance of Cinq-Mars compared with the mighty capability of the cardinal. “I love you more than ever,” he wrote to Richelieu: “we have been too long together to be ever separated, as I wish everybody to understand.” In reply, the cardinal had sent him a copy of the treaty between Cinq-Mars and Spain.
The king could not believe his eyes; and his wrath equalled his astonishment. Together with that of the grand equerry he ordered the immediate arrest of M. de Thou, his intimate friend; and the order went out to secure the Duke of Bouillon, then at the head of the army of Italy. He, caught, like Marshal Marillac, in the midst of his troops, had vainly attempted to conceal himself; but he was taken and conducted to the castle of Pignerol. Fontrailles had seen the blow coming. He went to visit the grand equerry, and, “Sir,” said he, “you are a fine figure; if you were shorter by the whole head, you would not cease to be very tall; as for me, who am already very short, nothing could be taken off me without inconveniencing me and making me cut the poorest figure in the world; you will be good enough, if you please, to let me get out of the way of edged tools.” And he set out for Spain, whence he had hardly returned.
What had become of the most guilty, if not the most dangerous, of all the accomplices? Monsieur, “the king’s only (unique) brother,” as Madame de Motteville calls him, had come as far as Moulins, and had sent to ask the grand equerry to appoint a place of meeting, when he heard of his accomplice’s arrest, and, before long, that of the Duke of Bouillon. Frightened to death as he was, he saw that treachery was safer than flight, and, just as the king had joined the all but dying cardinal at Tarascon, there arrived an emissary from the Duke of Orleans bringing letters from him. He assured the king of his fidelity; he entreated Chavigny, the minister’s confidant, to give him “means of seeing his Eminence before he saw the king, in which case all would go well.” He appealed to the cardinal’s generosity, begging him to keep his letter as an eternal reproach, if he were not thenceforth the most faithful and devoted of his friends.
Abbe de La Riviere, who was charged to implore pardon for his master, was worthy of such a commission: he confessed everything, he signed everything, though he “all but died of terror,” and, at the cardinal’s demand, he soon brought all those poltrooneries written out in the Duke of Orleans’ own hand. The prince was all but obliged to appear at the trial and deliver up his accomplices in the face of the whole world. The respect, however, of Chancellor Seguier for his rank spared him this crowning disgrace. The king’s orders to his brother, after being submitted to the cardinal, bore this note in the minister’s hand: “Monsieur will have in his place of exile twelve thousand crowns a month, the same sum that the King of Spain had promised to give him.”
“Paralysis of the arm did not prevent the head from acting;” the dying cardinal had dictated to the king, stretched on a couch at his side, in a chamber of his house at Monfrin, near Tarascon, those last commands which completed the dishonor of the Duke of Orleans and the ruin of the favorite. Louis XIII. slowly took the road back to Fontainebleau in the cardinal’s litter, which the latter had lent him. The prisoners were left in the minister’s keeping, who ordered them before long to Lyons, whither he was himself removed. The grand equerry coming from Montpellier, M. de Thou from Tarascon, in a boat towed by that of the cardinal, and the Duke of Bouillon from Pignerol, were all three lodged in the castle of Pierre-Encise. Their examination was put off until the arrival of such magistrates “as should be capable of philosophizing and perpetually thinking of the means they must use for arriving at their ends.” That was useless, inasmuch as the grand equerry “never ceased to say quite openly that he had done nothing to which the king had not consented.”
Louis XIII. was, no doubt, affected by such language; for, scarcely had he arrived at Fontainebleau, whither he had been preceded by news of the end of the queen his mother, who had died at Cologne in exile and poverty, when he wrote to all the parliaments of his kingdom, to the governors of the provinces, and to the ambassadors at foreign courts, to give his own account of the arrest of the guilty and the part he himself had played in the matter. “The notable and visible change which had for the last year appeared in the conduct of Sieur de Cinq-Mars, our grand equerry, made us resolve, as soon as we perceived it, to carefully keep watch on his actions and his words, in order to fathom them and discover what could be the cause. To this end, we resolved to let him act and speak with us more freely than heretofore.” And in a letter written straight to the chancellor, the king exclaims in wrath, “It is true that having seen me sometimes dissatisfied with the cardinal, whether from the apprehension I felt lest he should hinder me from going to the siege of Perpignan, or induce me to leave it, for fear lest my health might suffer, or from any other like reason, the said Sieur de Cinq-Mars left nothing undone to chafe me against my said cousin, which I put up with so long as his evil offices were confined within the bounds of moderation. But when he went so far as to suggest to me that the cardinal must be got rid of, and offered to carry it out himself, I conceived a horror of his evil thoughts, and held them in detestation. Although I have only to say so for you to believe it, there is nobody who can deem but that it must have been so; for, otherwise, what motive would he have had for joining himself to Spain against me, if I had approved of what he desired?”
The trial was a foregone conclusion; the king and his brother made common cause in order to overwhelm the accused, “an earnest of a peace which was not such as God announced with good will to man on Christmas day,” writes Madame de Motteville, “but such as may exist at court and amongst brothers of royal blood.”