Chretien de Troyes was a French poet and writer who lived during the 12th century. He is known for his influential contributions to medieval literature, particularly for his Arthurian romances. Chretien's works often revolve around the adventures of King Arthur and the Knights of the Round Table, and he is credited with popularizing the Arthurian legend in French literature. His writing style and storytelling techniques have had a lasting impact on the development of chivalric romance and the portrayal of courtly love in literature.