She married at sixteen, and was attached to the Empress Josephine as dame du palais in 1802.

Talleyrand was among her admirers, and she was generally regarded as a woman of great intellectual capacity and personal grace.

After her death, her Essai sur l'éducation des femmes, was published and received academic approval, but it was not until her grandson, Paul de Rémusat, published her Mémoires (3 vols., Paris, 1879–80), which followed by some correspondence with her son (2 vols., 1881), that justice could be done to her literary talent.

[1] Claire's memoirs threw light not only on the Napoleonic court, but also on the youth and education of her son Charles de Rémusat.

[1] She was the granddaughter of Jean Gravier, marquis de Vergennes, elder brother of the French Minister of Foreign Affairs and Chief Minister of King Louis XVI, Charles Gravier, comte de Vergennes.