Sigurd is a legendary warrior from Germanic myths such as the Nibelungenlied and the Völsunga Saga. He is most famous for slaying the dragon Fafnir. Tier: At least 9- Kildene til borgerkrigstiden. Hovedkildene til hva som skjedde i borgerkrigstiden er kongesagaene, Heimskringla, Fagrskinna og Morkinskinna, som alle beskriver. When Sigurd died in 1130, Harald broke his oath. Sigurd's son Magnus was proclaimed king, but Harald also claimed the royal title, and received much support The Nibelungenlied (Middle High German: Der Nibelunge liet or Der Nibelunge nôt), translated as The Song of the Nibelungs, is an epic poem from around 1200 written.