A wit and beauty, born at Lyons, illegitimate child of the Countess d'Albon; went to Paris as companion to Madame du Deffand, with whom she quarrelled; set up a salon of her own, and became celebrated for her many attractions; D'Alembert was devoted to her; many of her letters to her lovers, the Marquis de Mora and M. de Guilbert in particular, have been published, and display a charming personality (1732-1776).