Siegfried (sēgˈfrēd) [key] or Sigurd sĭgˈərd, great folk hero of early and medieval Germanic mythology. His legend, important in several Germanic epics, recounts his killing of the dragon Fafnir, his marriage to Gudrun (or Kriemhild), his love and betrayal of Brunhild, and his tragic death. See Niebelungenlied under Nibelungen.
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