Louise Marie Madeleine Fontaine
Louise-Marie-Madeleine Guillaume de Fontaine (after marriage known as Madame Dupin; 28 October 1706 – 20 November 1799) was a French "saloniste".
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.