To meet this combination, Louis XV., on the advice of his Minister but against his own better judgment, signed one of those one-sided and altruistic treaties which characterised French policy at this time, and renewed the family compact of 1733 by a treaty signed at Fontainebleau in October 1743. In this new edition the Bourbons of France and Spain pledged themselves to an indissoluble union. France was to declare war against Great Britain and Sardinia, to help Spain to reconquer Parma and the Milanese for Don Philip, and to compel Great Britain to give up her colony of Georgia. Finally, the two Powers were not to make peace until Gibraltar and, if possible, Minorca were restored to Spain.[148] [Sidenote: May 1744.] But the Austrian successes once more brought Frederick into the field to redress the balance, which now inclined too much to Austria, as it had inclined too much to France. Austria had acquired Bavaria for the moment, and perhaps would never evacuate it; she might be encouraged to attempt the reconquest of Silesia. Her armies were now in Alsace; where would they stop? The Queen, he knew, was only a degree less tenacious than himself. So he signed a new convention at Frankfort with the Emperor, the King of France, the King of Sweden as Landgrave of Hesse, and the Elector Palatine, and again took up arms against Austria, which was almost drained of troops. France about the same time formally declared war against Great Britain and Austria, whom she had been fighting, so to speak, incognito, for three years past. On the other hand a quadruple alliance was concluded between Great Britain, Austria, Holland, and Saxony; based as usual on British subsidies, which Parliament ungrudgingly voted, with the eloquent but surprising support of Pitt. Here begins the third period of the war. Louis XV. and Marshal Saxe at the head of 80,000 men entered the Austrian Netherlands almost without resistance. Frederick soon made himself master of Bohemia and Bavaria, and returned the Electorate to its sovereign, the Emperor Charles VII. In January 1745, worn out with misfortunes and anxieties and dignities, but once more in his capital, that hapless monarch died. Within three months his successor had concluded peace with Austria through the earnest pressure of the British Cabinet on the haughty Queen; the Elector abandoning his claims on the Austrian dominions, and promising his vote for the Empire to Maria Theresa's husband. Peace between Austria and the King of Poland, Elector of Saxony, followed in May, when the contracting parties entered into a premature concert for the partition of the Prussian dominions.