Charlotte Gainsbourg was originally cast as Camille.
Ludivine Sagnier was also considered for the part of Camille.
La Coupole is a famous brasserie in Montparnasse, renowned for many of the famous people who have dined there.
The Château d'Anet is a French château near Dreux built for Diane de Poitiers, the mistress of Henry II of France. It was a gift to her from the king and was built on the site of former château at the centre of the lands of Diane's deceased husband, Louis de Brézé, seigneur d'Anet.
L'ecole nationale des Chartes is a school located in the 5th arrondissement of Paris, the Sorbonne, and specialises in training students for work in auxiliary areas of history, such as archivists, librarians or teacher-researchers.