"the Princess de Clèves, or of René"

La Princesse de Clèves is a French novel which was published anonymously in 1678. It is thought to have been written by Madame de La Fayette. Despite being married to the Prince de Clèves, the heroine falls in love with Duc de Nemours. Although they do not consummate their love, the jealously of her husband forces the Princess to choose between duty and love even after his death.

René is a novel by François-René de Chateaubriand (1768-1848), who is considered to be the father of French Romanticism.