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’Orléans, the niece of Louis XIV, and, as instructed by the king of France, endeavored to pursue French political interests in Madrid with female members of royalty.

This volume includes her surviving letters from Madrid to her friend Madame de Coulanges and an appendix of her letters sent from Paris and Turin. The letters from Spain, written between 1679 and 1681, paint a vivid and engaging picture of the royal court and its new queen.