The folly of the Pretender spared the minister all trouble with regard to the Jacobites, for James had succeeded in alienating his ablest partisans. He had quarrelled with Atterbury as he quarrelled with Bolingbroke, he had excited scandal by his quarrel with his wife, and had suffered an unworthy favourite, Colonel Hay, or Lord Inverness as he called himself, to supplant all his better partisans in his favour. And when the death of Lord Mar was followed by that of the Duke of Wharton and of Atterbury in 1732, the Jacobite cause fell into the hands of very inferior agents, whose intrigues, insignificant as they were, seem to have been thoroughly known by Walpole. [Sidenote: European complications.] It was thus with one source of danger practically removed that Walpole resumed the threads of foreign policy. The last reign had closed before peace had been concluded with Spain, and while there were still unsettled difficulties with the court of Vienna, although preliminaries had been signed both in Paris and in Spain by what is known as the Convention of the Pardo. It must indeed have been obvious that the Treaty of Vienna, plausible as it seemed, could not have been a lasting treaty. The Bourbons were upon the throne of Spain, and the close junction of the houses of Bourbon and Hapsburg was an impossible contradiction of all history, especially as the desire which was really the moving passion of the Spanish court, the establishment, namely, of a Spanish kingdom in Italy, was fundamentally opposed to the interests of Austria. At the same time the shadow of the approaching dissolution of his kingdom at his death was constantly overhanging the Emperor. No ideas of present greatness, not even the hope of restoring the Empire to the position it had held under Charles V., appeared in his eyes so important as to secure the reversion of his own estates for his daughter, according to the Pragmatic Sanction, by which, in 1713, he had arranged the succession to his hereditary kingdoms. It was impossible for him to hurry into a general war, which must of necessity prevent the acceptance of that arrangement. There was already a strongly expressed feeling in Germany against the marriages on which the Vienna Treaty rested, and which might have the effect of placing a Spaniard on the Imperial throne. The threatened secession of his chief allies, and the fear of postponing the acceptance of the Pragmatic Sanction, were sufficient reasons to induce the Emperor to withdraw from his bargain. He therefore accepted the mediation of France, where Fleury, though he probably never forgot the old policy of the country which he governed, always apparently exhibited a love of peace; and it was agreed that disputed points should be referred to a general Congress to be held at Aix-la-Chapelle, but subsequently moved to Soissons. [Sidenote: Congress at Soissons.]