Marie Anne de La Trémoille, princesse des Ursins

Marie Anne de La Trémoille, princesse des Ursins (1642 – 5 December 1722), was a French courtier and royal favourite known for her political influence, being a de facto ruler of Spain from 1701 until 1714. She spent most of her life as an agent of French influence abroad, at first in Rome, and then in Spain under the new Bourbon dynasty, followed by a final period at the exiled Stuart court in Rome. She played a central role in the Spanish royal court during the first years of the reign of Philip V, until she was ousted from the country following a power struggle with the new queen consort, Elisabeth Farnese.