Maria Teresa Felicitas d'Este

Maria Teresa Felicitas (French: "Marie Thérèse Félicité"; 6 October 1726 – 30 April 1754) was born a Princess of Modena. By marriage, she was the Duchess of Penthièvre. Maria Teresa was the mother-in-law of Philippe Égalité and a grandmother to the future Louis Philippe I.
Early life.
Maria Teresa was born on 6 October 1726 in Modena, Italy. She was the first child of Charlotte Aglaé d'Orléans and Francesco III d'Este, Duke of Modena. Her parents’ marriage wasn’t happy, and her mother would later move back to France.
Marriage.
In On 29 December 1744 at the Palace of Versailles, Maria Teresa married her second cousin, Louis Jean Marie de Bourbon, Duke of Penthièvre. The couple had seven children in total but only two of them survived childhood. The marriage was seen as very happy.
Death.
Marie Teresa died in childbirth in 1754 giving birth to a son who also died. Her husband refused to remarry and died in 1793. Her daughter, Marie Adélaïde, moved Marie Teresa’s body to the Royal Chapel, in Dreux.