Louise Antoinette Lannes, Duchess of Montebello was a French courtier, dame d'honneur (Mistress of the Robes) to Empress Marie Louise of France, and the second wife of Jean Lannes, one of the best military commanders in history and Napoléon's ablest Marshal, who was nicknamed the Achilles of the Grand Armée. She was the daughter of senator and financier François Scholastique, Count of Guéhéneuc. She was the sister of general Charles Louis Joseph Olivier, Count of Guéhéneuc.