Louise Marie Madeleine Fontaine
On 9 October 1749 at the Church of Saint-Sulpice, Paris, Jacques-Armand Dupin married with Louise-Alexandrine-Julie de Rochechouart-Pontville. But for Louise and her husband, their son was a source of many troubles, especially when he ran up debts of very large sums of money from gambling. His father had to sell many of his assets in 1750 to honor the debt of his son. The troubles with Jacques-Armand, however, continued. Claude Dupin was forced to obtain against him a "Lettre de cachet", who imprisoned Jacques-Armand in the fortress of Pierre Encise under the pretext of madness. After this, the family decided to send him to the Île Maurice (26 October 1765), where he remained for the next two years until his death on 3 May 1767, a victim of yellow fever. Before embarking on the "Count of Artois", a merchant ship of the French East India Company, Jacques-Armand reportedly revealed to his mother the existence of an illegitimate daughter of his, called Marie-Thérèse Adam, whose origins, however, remained mysterious. Nevertless, Madame Dupin took care of the child and raised as her own, later becoming in her reader and heiress. Louise considers Marie-Thérèse as her own daughter and educated after her own image, transmitting her high culture and elegance of her manners. Marie-Thérèse Adam was entirely dedicated to Madame Dupin and remained at her side until the last moment.
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.