Louis Nicolas Le Tonnelier, Baron of Breteuil, 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.
- Occupation
- diplomat, politician
- Position held
- Introducer of Ambassadors
- Citizenship
- France
- Born
- September 14, 1648
- Died
- May 24, 1728