Definition of "Tristan"

After the first son had been properly named after the grandfather, the second caught the brunt of her few impulses, being named "Tristan", gleaned from medieval lore from her years at Wellesley.

1978, Jim Harrison, Legends of the Fall, Dell, published 1994, page 201

'His name is Tristan, by the way.' 'Tristan?' 'Yes. Oh, I should have told you. You must have wondered about my own queer name. It was my father. Great Wagnerian. It nearly ruled his life. It was music all the time – mainly Wagner.'

2012 May 17, James Herriot, All Creatures Great and Small: The Classic Memoirs of a Yorkshire Country Vet, Pan Macmillan