 It was during this costume ball that Louis XV, who was dressed as a yew tree, met Jeanne-Antoinette Poisson d'Étiolles, who was costumed as Diana, goddess of the hunt.Jeanne-Antoinette, who became Louis XV's mistress, is better known to history as the Marquise de Pompadour.Foreign audiences were granted, including that of the Doge of Genoa in 1685 and the embassy of King Mahmud I of Turkey in 1742.