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".
Bourbon-Penthièvre
Louise Marie Adélaïde de Bourbon was first known as "Mademoiselle d'Ivoy", then "Mademoiselle de Penthièvre". In April 1769, she married her distant cousin, the duc de Chartres, who inherited the title of duc d'Orléans at the death of his father, Louis-Philippe I d'Orléans in 1785, but took the name Philippe Egalité during the French Revolution of 1789. Mlle de Penthièvre had brought with her a dowry of 6 million livres, and an annual allowance of over 500,000 livres. Upon the death of the duc de Penthièvre in 1793, the Bourbon-Penthièvre fortune Louise Adélaïde was to inherit was confiscated by the revolutionary government. It is only after her return to France during the First Bourbon Restoration of 1814 that she was able, through numerous legal battles, to regain what was left of some of her land estates, many of them having been either sold, gutted or nearly destroyed during the Revolution.At the Palace of Versailles, the family also occupied a suite of apartments located on the ground floor of the Palace underneath the "Grand Appartement du roi". Originally called the Appartements des Bains, they were the former apartments of Françoise-Athénaïs de Montespan, the mother of the duc du Maine, the comte de Toulouse, the duchesse d'Orléans and the princesse de Condé.