Knight of the Swan
The story of the Knight of the Swan, or Swan Knight, is a medieval tale about a mysterious rescuer who comes in a swan-drawn boat to defend a damsel, his only condition being that he must never be asked his name. The earliest versions, preserved in John of Alta Silva's Dolopathos) do not provide specific identity to this knight, but the Old French Crusade cycle of chansons de geste adapted it to make the Swan Knight (Le Chevalier au Cigne, first version around 1192) the legendary ancestor of Godfrey of Bouillon.