Louise Marie Madeleine Fontaine
Louise gives birth to a son, Jacques-Armand on 3 March 1727 in Paris.
Thanks to the generosity of Samuel Bernard and his income of the "Ferme générale", Claude Dupin could obtain a considerable fortune, mainly in lands. Monsieur and Madame Dupin occupy a privilege position and had a lavish lifestyle. On 12 April 1732 Claude Dupin, jointly with his mother-in-law Manon Dancourt, bought the prestigious Hôtel Lambert in the Île Saint-Louis for the sum of 140,000 livres. On 9 June 1733 he acquired the magnificent Château de Chenonceau from the Duke of Bourbon for 130,000 livres. Each year, the Dupins spent the autumn in the Touraine. Starting in April 1741, Louise, with her husband, son and stepson, remained in the Hôtel de Vins, located in the Parisian Plâtrière street and from 1752 they also owns a house in Clichy-sur-Seine where they spend the summer months. On 24 April 1738 with the acquisition of the Marquisate of Blanc and the Castellany of Cors, located at the limits of Berry and Poitou, they completed their patrimony. The Marquisate of Blanc includes the "Château-Naillac", the "château de Roche", the "Château de Rochefort", "Château de Cors", "Château de Forges", with his respectives properties, farms, ponds and lands, who produced a total of 555,000 livres, four times the prize of Chenonceau. But soon difficulties arosed with the Countess of Parabère, the former owner, who caused the sequestration of Blanc lands and only after a decree of the Parlement of Paris dated 2 September 1739, confirmed by a judgment of 11 December, confirmed Claude Dupin as the legitimate owner of this lands and could recovered them.
Prince Xavier of Bourbon-Parma
Residing in Paris and sustained by his remaining portion of the family wealth, Xavier reached his mid-30s before making marriage plans; his fiancée being Madeleine de Bourbon-Busset, who was nine years his junior and the daughter of the Count de Lignières. She belonged to a non-royal branch of the French Bourbons. The Bourbon-Bussets have been the subject of a centuries-old controversy: historically regarded as non-dynastic when the line was founded, it has never been established that the Bourbon ancestor from whom they undisputedly descend, Louis de Bourbon, Bishop of Liège (1436-1482), was ever lawfully married. The proposed marriage of Prince Xavier and Madeleine might deprive their children of Bourbon-Parma ducal succession rights, depending upon the decision of the head of the house. Since the death of Duke Robert, Prince Élie, Xavier's eldest half-brother, headed the family. He declared the would-be marriage morganatic. Despite this obstacle, Xavier wed Madeleine in 1927 and some newspapers titled her "princesse".
As the Bourbon-Bussets enjoyed significant wealth, the marriage changed the financial status of Xavier. The couple settled in Bostz castle, where Xavier managed the rural estate of his in-laws. Their eldest, Hugues, was born in 1928 and was followed by five more children, the last one was born in 1940. Following the 1932 death of his father-in-law, Xavier became head of the family's enterprise, including the Château de Lignières. Little is known of his public activity at that time, except that he was engaged in various non-political, Catholic initiatives. In 1934 the premature death of Sixte deprived Xavier of his closest comrade.