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".
House of La Fayette
Adrien Jules and Olivia had a son, Louis de Lasteyrie who married Olivia Mills Goodlake; they had two children, Gui de Lasteyrie (b. 1878), and Louis de Lasteyrie (1881–1955). Louis married Louise Chodron de Courcel, in 1908.
Juste-Charles de la Tour-Maubourg (Motte-Galaure, Drôme 8 June 1744, 28 May 1831), married Anastasie de Lafayette; they had two children: Célestine Louise Henriette de Fay de La Tour-Maubourg (1799 – 16 July 1893), and Jenny de Fay de La Tour-Maubourg (6 September 1812 – 15 April 1897). He was a French soldier and politician during the French Revolution, and the First French Empire. His father was Claude Florimond du Faÿ (1712–1790) and his mother was Marie Françoise de Vacheron de Bermont (b.1712). His younger brother, Marie Victor de Fay, marquis de Latour-Maubourg, was a Cavalry Corps commander, survived the Russian Campaign and was wounded at the battle of Leipzig.