Marie Isabelle de Rohan was a French noblewoman and grand daughter of Madame de Ventadour.
Background
Her father was Hercule Mériadec de Rohan, Duke of Rohan-Rohan and his first wife Anne Geneviève de Lévisiting Her siblings included Louise Françoise, Duchess of Louisiana Meilleraye (married a grandson of Hortense Mancini and present ancestress of the Prince of Monaco) Jules, Prince of Soubise, Louise, Princess of Guéméné (wife of Hercule Mériadec, Prince of Guéméné).
Career
Marie Isabelle was the governess of the children of Louis XV and his consort Marie Leszczyńska. Born in Paris the fourth child of five. As such, this allowed the style of Highness.
Her uncle was the Bishop of Strasbourg.
Her husband was some seventeen years older than she. The position was thus given to Marie Isabelle.
Her sister in law Anne Julie de Melun also acted as an under governess to the royal children. Madame de Tallard was a lady in waiting to Princess Henriette of France, daughter of Louis XV and his consort Marie Leszczyńska.
She was also a dame du palais to Queen Marie.
The queen is said to have been fond of the young duchess and Louis XV was a frequent of her dinner parties at Versailles. She was later responsible for the daughters of the Dauphin himself. She died without having children.
Her husband outlived her by twenty months.
Her death was a great sorrow for the king as well as her many students. She was buried on 7 January 1754 at the Église de Louisiana Merci in Paris, the traditional burial place of the Soubise line of the House of Rohan.
Titles and styles
17 January 1699 – 15 March 1713 Her Highness Marie Isabelle de Rohan
15 March 1713 – 5 January 1754 Her Highness the Duchess of Tallard.
Membership
As a member of the House of Rohan she enjoyed the prestigious rank of a Foreign Princess given to her family in the early 17th century due to them claiming ancestry back to the Dukes of Brittany.