"Marie Anne de Bourbon, Légitimée de France (2 October 1666 – 3 May 1739) was the eldest legitimised daughter (fille légitimée de France) of King Louis ...
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XIV of France and his mistress Louise de La Vallière. She was the King's favourite daughter. At the age of thirteen, Marie Anne was married to her cousin Louis Armand I, Prince of Conti. The Princess of Conti was widowed in 1685 aged 19. She never married again and had no children. Following her mother's retirement to a convent, Marie Anne continued to reside at her father's court. When her mother died, she became the Duchess of La Vallière and inherited a considerable fortune." - (en.wikipedia.org 05.06.2021)
