Tags: Noble.
Louis Marie Florent de Lomont d’Haraucourt duke of Châtelet (20 November 1727 Semur-en-Auxois Côte-d’Or – 13 December 1793 Paris) was a French army officer nobleman and diplomat. He served as (among other roles) governor of Semur-en-Auxois in Burgundy. He was guillotined in 1793 aged 66. He is also notable as the son of Émilie du Châtelet scientist and lover of Voltaire.