a hero who killed the dragon Fafnir to gain the treasure of Andvari, won Brynhild for Gunnar by deception, and then was killed by her when she discovered the fraud. His wife was Gudrun
German counterpart: Siegfried
Sigurd in American English
(ˈsɪgərd)
noun
the hero of the Volsunga Saga: identified with the Germanic Siegfried