The same pattern appears in stories where Melusine marries a nobleman only after he makes an oath to give her privacy in her bath; each time, she leaves the nobleman after he breaks that oath. Shapeshifting and flight on wings away from oath-breaking husbands also figure in stories about Melusine. According to Sabine Baring-Gould in Curious Tales of the Middle Ages, the pattern of the tale is similar to the Knight of the Swan legend which inspired the character "Lohengrin" in Wolfram von Eschenbach's Parzival.[1]