Iseult (also Isolde) was a princess in medieval legend; known as Iseult the Fair. She was the daughter of King Anguish of Ireland. Tristram was sent to seek her hand on behalf of his uncle, King Mark of Cornwall. The tragic story is part of the body of Arthurian literature. Versions of the legend were told by Thomas of Brittany (fl. 12th century), Gottfried von Strassburg (fl. 12th-13th century), Alfred, Lord Tennyson, and Richard Wagner.