[<< wikipedia] Louis Nicolas le Tonnelier de Breteuil
Louis Nicolas Le Tonnelier, Baron of Breteuil (14 September 1648, in Montpellier – 24 May 1728), baron of Preuilly and of Breteuil was an officer in the royal household of Louis XIV. He is also notable as the father of the mathematician Émilie du Châtelet.


== Sources ==
Marie-Lan Nguyen, Les officiers de la Maison du Roi et le cérémonial public de Henri III à Louis XVI