Louise Florence Pétronille Tardieu d'Esclavelles d'Épinay, better known as Mme d'Épinay, was a French writer, a saloniste and woman of fashion, known on account of her liaisons with Friedrich Melchior, Baron von Grimm, and Jean-Jacques Rousseau, who gives unflattering reports of her in his Confessions, as well as her acquaintanceship with Denis Diderot, Jean le Rond d'Alembert, Baron d'Holbach and other French men of letters during the Enlightenment. Wikipedia