Valentine de Sainte-Aldegonde

Portrait of Valentine, Duchess of Dino, by Vigée Le Brun

Marie Valentine Joséphine de Sainte-Aldegonde (29 May 1820  23 September 1891) was the wife of Alexandre Edmond de Talleyrand-Périgord, 3rd Duke of Dino, and mistress of Anatole Demidov.


She was the daughter of Count Charles Camille de Sainte-Aldegonde and Adelaïde Joséphine de Bourlon de Chavagne. On 8 October 1839 she married Alexandre Edmond de Talleyrand-Périgord, son of Edmond de Talleyrand-Périgord and Princess Dorothea of Courland, at the Château de Beauregard at Cellettes (Loir-et-Cher), her mother's property.

Valentine de Sainte-Aldegonde's passionate admirer, Anatole Demidov, attended her wedding and even helped assist the event. He offered her a diamond ornament whose magnificence caused the bridegroom worry. The next year, in 1840, Demidov briefly broke off their liaison due to financial problems, but later that same year married Mathilde Bonaparte and resumed his affair with Valentine on his first stay in Paris after his wedding. In 1845, he arranged for Valentine to settle with him in Florence and stayed by her side, even though her husband took umbrage. At a costume ball, Valentine was insulted by her rival, Mathilde, and in response Demidov slapped his wife twice in public, which signalled their final separation soon thereafter.


With Talleyrand-Périgord, Valentine had six children, of whom four survived:

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