Princess of Guéméné by Louis Auguste Brun
From maria-antonia.justgoo.com/t109-victoire-armande-princesse-de-guemenee; purplish color removed and contrast altered by gogm.
The wide hat and frizzy coiffure beneath it suggests this dates from the later 1780s.
Keywords: Brun, Victoire de Rohan, Marie Thérèse de France, Princess, Rohan family, French, long frizzy coiffure, ribboned hat, vee neckline, fichu, close sleeves