Tristan and Isolde, the passion born of a potion

No story shaped the medieval idea of love as much as that of Tristan and Isolde. Probably born from Celtic material from Cornwall, Wales and Brittany, the legend took literary form in France and England in the second half of the 12th century. It tells of an impossible and irresistible love that defies marriage, the king and the law, and ends only in death.

The medieval versions

The oldest texts are fragmentary. The Norman Béroul wrote a poem of which the central part survives, rough and full of tricks; the Anglo-Norman poet Thomas, active around 1170, composed a more courtly version, of which mainly the ending remains. Early in the 13th century the German Gottfried von Strassburg reworked Thomas in a great poem that was left unfinished.

In the 13th century came the French Prose Tristan, which tied the story to the world of King Arthur and the Round Table. From these works derive the Norse, Italian and English versions, down to Thomas Malory in the 15th century. Each author changes details and even the names vary, Isotta, Iseut, Isolde, but the core of the story remains surprisingly stable.

The voyage from Ireland

Tristan is the nephew of Mark, king of Cornwall. After killing the Irish giant Morholt in a duel, he is wounded and healed in Ireland by Princess Isolde the Fair, skilled in the healing arts. Later he returns to ask for her hand, not for himself but for his uncle. During the crossing the two drink by mistake the love drink that Isolde's mother had prepared for the bride and groom and entrusted to the faithful maid Brangaine.

In the legend the potion makes love inevitable and innocent at once: the lovers did not choose it. Isolde marries Mark but keeps meeting Tristan. In Béroul the two flee into the forest of Morrois, where the king finds them asleep with a naked sword laid between them and, believing them chaste, spares them.

White sails and black sails

Exiled, Tristan goes to Brittany and marries another woman with the same name, Isolde of the White Hands, without ever loving her. Wounded by a poisoned weapon, he sends for the queen, the only one able to heal him: the ship is to raise white sails if she is aboard, black if she has not come.

His jealous wife, seeing white sails on the horizon, tells him they are black, and Tristan dies of grief. Isolde the Fair comes ashore, lies down beside the body and dies in turn. According to some versions a bramble and a vine grew from the two tombs and intertwined, and no one could separate them.

The modern legacy

In 1865 in Munich Richard Wagner presented Tristan und Isolde, an opera that turned love and night into a longing for dissolution and which, with its famous opening chord, changed the history of harmony. Later, in 1900, the philologist Joseph Bédier reconstructed a unified version of the legend in French prose that enjoyed lasting success.

Tristan and Isolde established a model that European literature never abandoned: love as a force that overwhelms the will and stands against the social order. Many later couples, from Lancelot and Guinevere to Paolo and Francesca, have been read in the light of their story. Even today their names stand for a passion stronger than any prohibition.