During the French Revolution, which tested his family so cruelly, he lived in Paris with his mother in the greatest darkness.

He did not reappear until the Consulate, when in 1803, he married a niece of the Prince de Talleyrand and was introduced in 1806 to Napoleon, who named him chamberlain.

Louis XVIII treated him extremely well with Compiègne, created him Knight of the Order of Saint-Louis and commander of the Légion d'honneur on 13 August 1814 and named him ambassador to Saint Petersburg, where he remained until 1819; persona grata with the czar, he was the only foreign minister allowed at the imperial table on the dinner of 24 December 1814.

Returning to France, he was presented to the delegation, and lost 1 October 1821, in the 2nd Arrondissement of Meurthe (Lunéville), with 51 votes against 107 with the elected official, Mr. Laruelle.

They had four children: Old chamberlain of Napoleon, Just de Noailles became ambassador of France in Russia (1814–1819) then appointed of Meurthe (Lunéville), (1824–1827).