The most important section of her Wikipedia article follows: "Witty, well-educated and beautiful, the marquise de Boufflers wrote verse and drew in pastel. At the court at Lunéville, aged 34, she became the chief mistress to king Stanislas, then aged 64. This did not stop her also collecting other lovers; nicknamed la Dame de Volupté ("the lady of delight"), she was also the mistress of the poet Jean François de Saint-Lambert, then of M. of Adhémar, of the intendant de Lorraine Antoine-Martin Chaumont de La Galaizière, of the lawyer and poet François-Antoine Devaux, of the abbé Porquet, and many others.
To try to make the marquise de Boufflers jealous and regain her affections, Saint-Lambert attempted to seduce the marquise du Châtelet when the latter arrived in Lunéville in 1748. The marquise du Châtelet fell passionately in love with the poet and became best friends with the marquise de Boufflers, thus completely ruining the plans of Father Menou, Stanislas's confessor, who wanted to use her to dislodge the marquise de Boufflers as chief mistress to the king."
From the lost gallery's photostream on flickr; flaws that resembled areas of worn paint were fixed with Photoshop by gogm.