Bernard-François, marquis de Chauvelin

François-Bernard de Chauvelin, marquis de Grosbois (born 29 November 1766 in Paris; died 9 April 1832 in Paris), also known as Marquis de Chauvelin, was a French nobleman, diplomat, parliamentarian and liberal reformer.

The scion of an illustrious family, Chauvelin followed his father François-Claude de Chauvelin as Master of the King's Wardrobe (to Louis XVI) and fought in the Comte de Rochambeau's French Expeditionary Force. However, despite being of aristocratic birth, he had been raised with liberal views and thus became supportive of the French Revolution.

In February 1792 he married Herminie-Felicienne-Joséphine Tavernier de Boulogne de Magnanville and was posted to the Court of St. James's, styled "Ambassador's Cloak" (or Deputy Ambassador), under Talleyrand. His role in London was to persuade the British Government to remain neutral in the impending war between France and Austria and Prussia. Arriving in May 1792, Chauvelin was well received at first and secured British neutrality. However, on 10 August 1792, in light of the storming of the Tuileries and the formal suspension of King Louis XVI of France from power, Chauvelin's status became ambiguous - as his credentials had been issued by a non-ruling king and, moreover, Britain had recalled its own ambassador (and not replaced him), thereby ending official communication. Following the formation of French Republic in September, the new French republican government did not promptly renew his credentials, ending what remained of his official status at the Court of St James. Despite Chauvelin's claims to continue as interim representative of France until the arrival of his new credentials (he believed them imminent), foreign secretary William Grenville refused to recognize him as officially speaking for the French republic and returned his papers and missives. Chauvelin finally received his new credentials from the French republic in January, 1793 and requested an audience with the British king to present them. But the timing was inauspicious - Louis XVI had been sentenced to death by the French convention the day before, and would be executed a few days later (January 21). Chauvelin was ordered to leave England by 1 February 1793, as the British made preparations for war.

...
Wikipedia