Louise Marie Madeleine Fontaine
Louise-Marie-Madeleine Guillaume de Fontaine (after marriage known as Madame Dupin; 28 October 1706 – 20 November 1799) was a French "saloniste".
Louise Julie de Mailly
Madame de Mailly remained official mistress, but the king fell in love with Pauline-Félicité and arranged her marriage to the Marquis de Vintimille, enabling her to stay at court, and gave her the castle of Choisy-le-Roi as a gift. Madame de Vintimille quickly became pregnant and died giving birth to the king's illegitimate son, Louis, the duc de Luc, who looked so much like the king that he was called "Demi-Louis" ('Small Louis'). 
Madame de Vintimille's remains lay in "Lit de parade" in the town of Versailles, but during the night a mob broke in and mutilated the body of "the king's whore". The king and Louise Julie were both devastated by the death of Pauline-Félicité and shocked by the mutilation of her body; in her despair she was said to have performed a Catholic rite of penitence by washing the feet of the poor.