Her parents' marriage was not happy and her mother eventually returned to her native France. The Duchess took up residence in the Luxembourg Palace in Paris, with the permission of Louis XV. It was while her mother was in France that she saw the opportunity to marry her daughters into the royal family; such alliances between princes du sang and princesses from a small Italian duchy was highly unexpected. Maria Teresa was engaged to her second cousin, Louis Jean Marie de Bourbon, Duke of Penthièvre. Her younger sister, Maria Fortunata, would also become a member of the French royal family in 1759 through her marriage to another cousin, Louis François Joseph, Prince of Conti.
Marriage and death (1744–1754)
Posthumous portrait, by Rosalie Grossard.
The Duke of Penthièvre was Maria Teresa's mother's first cousin. Charlotte Aglaé's mother was the sister of the duke's father, Louis Alexandre, Count of Toulouse. The wedding took place on December 29, 1744 in Modena, followed by another ceremony at the Palace of Versailles. The Duke had inherited a great fortune when his father died in 1737. According to some contemporaries, their marriage was a very happy one.
The couple's happiness would come to an abrupt end with the death of Maria Teresa on April 30, 1754, a day after giving birth to their seventh child, Louis Marie Félicité, who also died shortly after. After her death, her mother tried to arrange a marriage between her widower and her younger sister, Princess Matilde. However, the grieving duke declined the offer and never remarried.
Issue
Maria Teresa and her husband had seven children, but only two survived infancy:[1]
_in_1733_with_her_daughter_overlooked_by_a_portrait_of_her_husband_by_then_Hereditary_Prince_by_Nicolas_de_Largilli%C3%A8re.png)
