Louise Marie Madeleine Fontaine
Jean-Jacques Rousseau subsequently sent an inflamed letter to Madame Dupin, who returns him expressing her concern. This doesn't stop the writer for much and only the intervention of Louise's stepson put an end to his attentions. But Madame Dupin was hardly spiteful and some months after these incidents, takes Rousseau in her service and put him in charge of the education of her son Jacques-Armand for eight days pending for a new tutor. Subsequently, the Dupins taken Jean-Jacques Rousseau as secretary after their return from Venice in 1745, when he is not yet a writer and for a modest salary. His job was to take notes and research for the book projected by Madame Dupin, namely "the defense of women in the 18th century are discussed in minor ... until they died". Madame Dupin stood Rousseau almost to a subordinate or, in the words of Grimm and Marmontel, she gives him leave the day it receives academicians. Jean-Jacques Rousseau feels bitterness after leaving his job as a secretary in 1751, but will always keep good relations with the Dupin family. Madame Dupin provides financial support to his wife, Marie-Thérèse Levasseur, who gave birth to five children abandoned by Rousseau to the Foundling Hospital. As for Louis Claude Dupin, his bound with Rousseau came for their common passion for music. The stepson of Madame Dupin was interested in physics, chemistry and natural history, hoping to integrate the Academy of Sciences and the philosopher did write an unfinished book, popular science to "Institutions of Chemistry".
Louise Henriette de Bourbon
The couple had three children:Louise Henriette died on 9 February 1759 at age 32, with her husband and children at her side, at the Palais-Royal, the Orléans residence in Paris. Her son and daughter were, respectively, eleven and eight years old. After her death, her husband had several mistresses, ultimately finding the love of his life, the witty but married marquise de Montesson, whom he married after she became a widow. Like her mother, who had inherited the title through her Condé's ancestry, Louise Henriette was the "duchesse d'Étampes" in her own right, having inherited the title on the occasion of her husband's rise to the head of the House of Orléans in 1752. At her death, her son inherited the ducal title, which he held until it became extinct in 1792, during the French Revolution.