Jeanne de Valois-Saint-Rémy, also known as Jeanne de la Motte, was a key figure in the Affair of the Diamond Necklace, a scandal that rocked the French monarchy in the late 18th century. She falsely claimed to be a descendant of the Valois kings and orchestrated a plot to obtain an extravagant diamond necklace, implicating Queen Marie Antoinette. Jeanne's actions contributed to public mistrust of the monarchy and played a role in the lead-up to the French Revolution.