Duke de Nemours is a fictional character from the classic French play "La Princesse de Clèves," written by Madame de La Fayette in the 17th century. He is portrayed as a charming and nobleman who becomes infatuated with the titular character, Madame de Clèves. His pursuit of her love is central to the story's exploration of passion, duty, and the complexities of court life. In the narrative, Duke de Nemours embodies the ideals of romantic heroism, often torn between his desires and the societal expectations of the French court. His character serves as a catalyst for the emotional conflicts faced by Madame de Clèves, highlighting themes of love, honor, and personal sacrifice.