XIR365045 Madame de Sorquainville, 1749 (oil on canvas) by Perronneau, Jean-Baptiste (1715-83); 101 x 81 cm; Louvre, Paris, France; (add.info.: La Dame de Sorquainville; nee Genevieve de Martainville; by 1764 she was a widow; held a salon; related to Madame de Pompadour by marriage, as her brother, Michel de Martainville (1694-1757), was married to Elisabeth, sister of Charles-Guillaume Le Normant d\'Etiolles , husband of Mme de Pompadour;); French, out of copyright.