When he reached convalescence, the truce suspending hostilities since the death of the Duke of Savoy was about to expire; Marshal Schomberg was preparing to march on the enemy, when there was brought to him a treaty, signed at Ratisbonne, between the emperor and the ambassador of France, assisted by Francis du Tremblay, now known as Father Joseph, perhaps the only friend and certainly the most intimate confidant of the cardinal, who always employed him on delicate or secret business.
[Illustration: Richelieu and Father Joseph----280] But Marshal Schomberg was fighting against Spain; he did not allow himself to be stopped by a treaty concluded with the emperor, and speedily found himself in front of Casale.

The two armies were already face to face, when there was seen coming out of the intrenchments an officer in the pope's service, who waved a white handkerchief; he came up to Marshal Schomberg, and was recognized as Captain Giulio Mazarini, often employed on the nuncio's affairs; he brought word that the Spaniards would consent to leave the city, if, at the same time, the French would evacuate the citadel.

Spinola was no longer there to make a good stand before the place; he had died a month previously, complaining loudly that his honor had been filched from him; and, determined not to yield up his last breath in a town which would have to be abandoned, he had caused himself to be removed out of Casale, to go and die in a neighboring castle.
Casale evacuated, the cardinal broke out violently against the negotiators of Ratisbonne, saying that they had exceeded their powers, and declaring that the king regarded the treaty as null and void; there was accordingly a recommencement of negotiations with the emperor as well as the Spaniards.
It was only in the month of September, 1631, that the states of Savoy and Mantua were finally evacuated by the hostile troops.

Pignerol had been given up to the new Duke of Savoy, but a secret agreement had been entered into between that prince and France: French soldiers remained concealed in Pignerol; and they retook possession of the place in the name of the king, who had purchased the town and its territory, to secure himself a passage into Italy.

The Spaniards, when they bad news of it, made so much the more uproar as they had the less foreseen it, and as it cut the thread of all the enterprises they were meditating against Christendom.