Louise Marie Madeleine Fontaine
Louise de Fontaine was born in Paris, in the parish of Saint-Roch, on 28 October 1706. Her baptism act was as follows:
Françoise Marie de Bourbon
The next of her daughters to marry was the youngest. Louise Diane, the favourite of Madame, was engaged to the young Louis François de Bourbon, "Prince of Conti" whom she married at Versailles. Louise died in childbirth at the Château d'Issy. Louise Diane's only surviving child was the last Prince of Conti, who would later marry Princess Maria Fortunata of Modena. Maria Fortunata was one of the daughters of the wayward Charlotte Aglaé, who was 
Françoise Marie's most difficult daughter. She returned from Modena in a self-imposed exile many a time and Françoise Marie and her son Louis chose to ignore her when she did. She returned to Modena in 1737 as the Sovereign Duchess Consort.