Louis Marie Florent du Châtelet
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Louis-Marie-Florent de Lomont d'Haraucourt, marquis later duc du Châtelet (20 November 1727, Semur-en-Auxois – 13 December 1793, Paris), was an aristocratic French Army general and diplomat of the Ancien Régime.
The Duke served as Governor of Semur-en-Auxois in Burgundy as well as Ambassador to the Court of St James's, besides other appointments. He was appointed to command the Regiment of French Guards shortly before the outbreak of the Revolution in 1789. Châtelet was subsequently imprisoned and guillotined, in 1793 aged 66.