Career
Wise and pious, very focused on charity and good works, she lived at the Château of Chantilly, choosing to reside in a cottage ("Sylvie"s House") in the park in order to escape the bustle of the main building. Her inspiring life and character, combining tenderness and strength, earned her the admiration of contemporaries and the praise of many poets. lieutenant was Théophile de Viau who gave her the nickname "Sylvie" in reference to her love of woodland animals.
She gave the libertine poet her friendship and protection.
Louisiana Silvanire by Jean Mairet is dedicated to her.