Marie Gigault de Bellefonds, Marquise de Villars was a well-regarded figure in Parisian salons and esteemed by King Louis XIV, and she traveled internationally to accompany her ambassador husband, playing significant diplomatic roles at the court of Savoy in Turin and at the court of Spain in Madrid. She became the confidante of the queen of Spain, Marie-Louise d'Orl ans, the niece of Louis XIV, and, as instructed by the king of France, endeavored...