The brother-in-law of the Marquis de Lafayette participated in three revolutionary wars, supported American independence, and participated in the suppression of an uprising by enslaved Africans in Haiti.

Louis-Marie, Viscount de Noailles, a prominent French officer, was indeed the brother-in-law of the Marquis de Lafayette through his marriage to Adrienne de Noailles, who was Lafayette's wife. Historical records confirm that Noailles participated in the American Revolutionary War, where he fought to support American independence. His military career later extended into the French Revolutionary Wars following his early participation in the National Assembly, where he famously proposed the abolition of feudal privileges in August 1789.frenchempire.netfrenchempire.netLouis Marie de Noailles (1756-1804)American Revolutionary War: Noailles served under his brother-in-law, the Marquis de Lafayette, and played a notable role in the American War for Independence, including organizing the conditions of the British surrender at the Siege of...worldhistory.orgworldhistory.orgLouis Marie Vicomte De NoaillesFrench Revolutionary Wars: Following his active participation in the early stages of the French Revolution (he is famous for proposing the abolition of feudalism in the National Assembly on August 4, 1789), he served as a maréchal de camp...Following these events, Noailles was involved in the conflict in Saint-Domingue, which is modern-day Haiti.

During the Haitian Revolution, he served as a military officer tasked with suppressing the uprising of enslaved Africans, a period marked by brutal combat that ultimately concluded with his death in 1804. His multifaceted military service across these three distinct revolutionary contexts is well-documented in historical accounts regarding his life and career.smithsonianmag.comsmithsonianmag.comThe Marquis De Lafayettes Brother in Law Participated in Three Revolutionary...The historical figure frequently identified as the Marquis de Lafayette's brother-in-law, who participated in the Haitian Revolution, is Louis-Marie, Viscount de Noailles (1756–1804) Relationship: Louis-Marie de Noailles was indeed the...en.wikipedia.orgen.wikipedia.orgMarquis De LafayetteLafayette married Adrienne de Noailles in 1774, and Louis-Marie was a member of the prominent Noailles family+1 more