The Romance of Tristan and Iseult

My lords if you would hear a high tale of love and of death here is that of Tristan and Queen Iseult; how to their full joy but to their sorrow also they loved each other and how at last they died of that love together upon one day; she by him and he by her. Long ago when Mark was King over Cornwall Rivalen King of Lyonesse heard that Marks enemies waged war on him; so he crossed the sea to bring him aid; and so faithfully did he serve him with counsel and sword that Mark gave him his sister Blanchefleur whom King Rivalen loved most marvelously. . . .