Louis Philippe was genuinely disquieted by Bresson's news. He was resolved, he told Lord Granville, who, early in January, had replaced Lord Stuart de Rothesay at the British embassy, to send the Comte de Flahaut to London to impress upon the government the keen anxiety with which he regarded the march of events at Brussels. By existing treaties, he reminded him, no member of the Bonaparte family was allowed to live in Belgium, and, in the course of conversation, he hinted that a Neapolitan prince would be the best king for the new State.[71] Flahaut was a distinguished general officer of the empire and was, besides, the admitted father of that half-brother of Louis Napoleon, who was to acquire celebrity under the name of the Duc de Morny. During the greater part of the Restoration period Flahaut had lived in London, where his attractive manners and charm of conversation had made him a popular member of society. Moreover, during his residence in England, he had married Miss Mercer Elphinstone, a great heiress of her day.[72] The mission, upon which he was now despatched to London, was not confined merely to the communication to the British government of Louis Philippe's fears respecting a Bonapartist candidate for the Belgian throne. But, as his instructions are not to be found among the diplomatic papers of the period, the exact nature of the proposals he was empowered to make can only be conjectured. In a private letter to Granville, on February 8, Palmerston speaks of a suggested offensive and defensive alliance between France and Great Britain "which was to be kept an entire secret from all the world," to which proposal he had replied, "that these alliances are not popular in England, but that if France were attacked unjustly, England would be found upon her side."[73] From the despatches of Granville and of Talleyrand it may be inferred with certainty that some scheme was on foot whereby France was to acquire a part of Belgium and, in return for her consent to this plan, England was to have the right of garrisoning Antwerp, which was to be declared a free port.[74] Talleyrand, whilst favourable to the idea of converting Antwerp into a Hanseatic town, was very much opposed to the notion of assisting England to regain a footing upon the continent. It would be too high a price to pay, he contended, even for so popular a measure as the extension of the French frontiers into Belgium.[75]