Marie de Beauvilliers

Marie-Catherine de Beauvilliers (25 April 1574 – 1667) was a French abbess.

When she was 24 she entered the convent-abbey of Montmartre in Paris, installed as abbess in succession to her sister, some three years later, in 1601. As a young woman she became one of the many mistresses of King Henry IV, when he lodged at the abbey while laying siege to Paris in 1590. It is nevertheless Marie-Catherine who is credited with having subsequently restored the abbey to moral and physical good order.