At the close of January 1630 the Duc d’Orleans, in compliance with his promise, took leave of the Court of Lorraine; and early in February he crossed the French frontier, and had an interview with the King, who had already reached Troyes, accompanied by the two Queens and their several households.  At this meeting the royal brothers displayed towards each other an amount of confidence which gladdened the heart of the Queen-mother, to whom their long estrangement had been a subject of perpetual grief and anxiety; nor was their good understanding lessened for an instant until their separation upon the departure of Louis for Lyons, when Monsieur in his turn proceeded to Orleans, where he remained until the middle of March; and thence he finally returned to Paris towards the close of April, to assume his command.[130]

As the Cardinal had foreseen, there was little time to be lost in retrieving the fortunes of the French armies.  Casal in Montferrat, which was held by M. de Thoiras,[131] was besieged by the Marquis de Spinola,[132] with an immense force, and he earnestly demanded the sum of fifty thousand crowns for defraying the arrears due to his troops, who had begun to murmur, and threatened to surrender.  The Germans had once more attacked Mantua, which they ultimately took; and the armies of MM. de la Force and de Schomberg were suffering from sickness, famine, and desertions, and, moreover, harassed by the troops of the Duke of Savoy.  Charles Emmanuel meanwhile was advancing in person upon Savillan, in order to provoke an engagement with the French forces; and on every side difficulty and danger loomed over the banners of Louis, when the Duke of Savoy was suddenly attacked by apoplexy and expired towards the close of January.  He was succeeded by Victor Amedee his elder son, who was the husband of Madame Christine de France, the sister of the French King; and it was anticipated that the closeness of this alliance would at once terminate all aggressive measures on the part of France, and that the new Duke would be suffered to take peaceful possession of his inheritance.  Such, however, was not the policy of the Cardinal, and accordingly the operations already directed against the Duchy were suffered to proceed.

Shortly after the arrival of the King at Lyons he received a despatch from the minister stating that he had taken Pignerol, and thus secured a safe passage for his Majesty into Italy; and that he was about to join him at Lyons, in order to receive his further commands.

On his arrival he was warmly welcomed by Louis, whom he easily induced to accompany him on his return to the seat of war; for although in his despatches Richelieu had affected to attach an immense importance to the conquest of Pignerol, he was aware that the honour of the French nation must be compromised should her armies be thus checked at the very commencement of the expedition, and he consequently urged the King at once to possess himself of the Duchy of Savoy;