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:
Jean Marie, Duke of Châteauvillain
His mother Maria Teresa d'Este, "Princess of Modena" by birth, was also a descendant of Louis XIV and Montespan, her mother Charlotte Aglaé d'Orléans being their grand daughter and child of Philippe d'Orléans, "Régent" of France. Jean Marie was created "duc de Châteauvillain" at his birth, one of the many titles his father possessed. At the time of his birth in 1748, his parents, who were devoted to each other, already had two other sons, Louis Marie born in 1746 and the Prince of Lamballe. At the early death of Louis Jean in 1749, Lamballe became the heir of one of the largest fortunes in Europe.