Angélique, Tome 1 : Marquise des anges

Blurb

Angélique, the Marquise of the Angels is a 1956 novel by Anne Golon & Serge Golon, the first novel in Angélique series. Inspired by the life of Suzanne de Rougé du Plessis-Bellière, known as the Marquise du Plessis-Bellière.
Angélique's marriage to Jeoffrey de Peyrac is thought to be parallel to that of the daughter of Madame de Sévigné, Françoise-Marguerite de Sévigné to the Comte de Grignan.
In 1964, it was adapted into a film by the same title.