The Romance of Tristan, written by Béroul in the 12th century, is a poetic retelling of the tragic love story of Tristan and Yseut. Tristan, a prince of Lyonesse, grows up under the guidance of his tutor, Governal, and becomes a skilled warrior. After rescuing Cornwall from invaders and suffering severe injuries, Tristan travels to Ireland in disguise to seek healing from the princess Yseut, a healer. When Tristan kills a dragon to protect Yseut, the Irish King offers her hand in marriage to King Mark of Cornwall instead. On the journey back, Tristan and Yseut accidentally drink a love potion, sparking a passionate affair. Despite their love, Yseut marries King Mark, and Tristan and Yseut continue their secret relationship. Eventually, they flee, encountering wise figures who urge them to repent, but they refuse. Their love leads to tragic separation, and both die from heartbreak, with King Mark burying them together. Béroul’s version is notable for its explicit treatment of love and passion, influencing later interpretations of romantic relationships.