Louis Jean Marie de Bourbon, Duke of Penthièvre
In 1744 Penthièvre married Princess Maria Teresa Felicitas d'Este of Modena, (1726-1754), the daughter of Francesco d'Este, the Duke of Modena and Reggio, and his first cousin, Charlotte Aglaé d'Orléans. The young couple occupied a suite of apartments at Versailles which had previously been occupied by their joint ancestor Madame de Montespan. These apartments were used by the duke and his family until the reign of Louis XVI of France when the space was given to Mesdames, the new king's spinster aunts.