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".
Marie Leszczyńska
Louis and Marie first met on the eve of their wedding, which took place on 5 September 1725, at the Château de Fontainebleau. Marie was twenty-two years old and Louis fifteen. The young couple was reported to have fallen in love at first sight. The relationship between Marie and Louis was initially described as a happy one, and for the first eight years of the marriage, Louis XV was faithful to her. Louis XV had been very impatient to marry her, was reportedly flattered to have a twenty two year old wife at his age, and refused to allow any criticism of her appearance. In August 1727, Marie gave birth to her first children, twins named Louise Élisabeth and Anne Henriette, at the Palace of Versailles. The king was reportedly delighted, stating that after it had been said that he could not be a father, he had suddenly became the father of two. Cardinal Fleury, however, was much more displeased, and decided that until the queen had given birth to a son, she would not be allowed to accompany the king on his trips but stay at Versailles. A year later, another daughter, Marie Louise was born, much to the disappointment of the King. The long-awaited Dauphin, Louis, was born on 4 September 1729 to the immense relief of the country, whose royal family had a history of failing to establish a secure male line of succession. In all, Marie had 10 live children, seven of whom survived to adulthood. Her children all regarded her as a role model of virtue, particularly the daughters, though Marie herself reportedly was not noted to show much affection toward them, being phlegmatic in her nature.