The Slaughter of the Niflungs.
Gunnar and Högni then took all the gold, Fafnir’s heritage. Dissension prevailed afterwards between the Giúkungs and Atli. He charged them with being the cause of Brynhild’s death. By way of reconciliation, it was agreed that they should give him Gudrún in marriage, to whom they administered an oblivious potion, before she would consent to espouse Atli. Atli had two sons, Erp and Eitil, but Svanhild was the daughter of Sigurd and Gudrún. King Atli invited gunnar and Högni to his residence, and sent to them Vingi, or Knefröd. Gudrún was aware of the treachery, and sent them word in runes not to come; and to Högni, as a token, she sent the ring Andvaranaut, in which she had tied some wolf’s hair. Gunnar had sought the hand of Oddrún, Atli’s sister, but did not obtain it. He then married Glaumvör, and Högni took Kostbera to wife. Their sons were Sólar, Snævar, and Giúki. When the Giúkungs came to Atli, Gudrún besought his sons to intercede for their lives, but they would not. The heart of Högni was cut out, and Gunnar was cast into a pen of serpents. He struck his harp and lulled the serpents, but an adder stung him in the liver.