Van wie was Louise-Lucie Cosnefroy de Saint-Ange?

Charles Ferdinand d'Artois, Duke of Berry (24 January 1778 – 14 February 1820), was the third child and younger son of Charles, Count of Artois (later King Charles X of France), and Maria Theresa of Savoy. In 1820 he was assassinated at the Paris Opera by Louis Pierre Louvel, a Bonapartist. In June 1832, two years after the overthrow of Charles X, an unsuccessful royalist insurrection in the Vendée was led by Charles Ferdinand's widow, Marie-Caroline, in an attempt to restore their son Henri, Comte de Chambord, to the French throne.