ウェブJeanne Antoinette Poisson, Marquise de Pompadour ( / ˈpɒmpədʊər /, French: [pɔ̃paduʁ] ⓘ; 29 December 1721 – 15 April 1764), commonly known as Madame de Pompadour, was a member of the French court. She was the official chief mistress of King Louis XV from 1745 to 1751, and remained influential as court favourite until her death. [1]