- Also Yseult .German Isolde .Arthurian Legend.
- the daughter of a king of Ireland who became the wife of King Mark of Cornwall: she was the beloved of Tristram.
- daughter of the king of Brittany, and wife of Tristram.
- a female given name.
- an Irish princess wed to Mark, king of Cornwall, but in love with his knight Tristan
- (in another account) the daughter of the king of Brittany, married to Tristan
