Bent on revenge, Sigmund repairs with Sinfiotli to Siggeir's castle. After Sinfiotli has slain the king's two sons, he and Sigmund are overpowered and condemned to be buried alive. With Sigmund's sword, however, which Signy has managed to place in their hands, they cut their way out, then set fire to Siggeir's hall. Signy comes forth and reveals to Sigmund that Sinfiotli is their own son; and then, saying that her work of revenge is complete and that she can live no longer, she returns into the burning hall and perishes with Siggeir and all his race.
Sigmund now returns home and rules as a mighty king. He marries Borghild, who later kills Sinfiotli with a poisoned drink, and is cast away by Sigmund. He then marries Hjordis. Lyngvi, the son of King Hunding, was also a suitor and now invades Sigmund's land. The latter hews down many of his enemies, until an old man with one eye, in hat and dark cloak, interposes his spear, against which Sigmund's sword breaks in two. Sigmund falls severely wounded.
In the night Hjordis seeks the scene of the combat and finds Sigmund still alive. He refuses to allow her to heal his wounds, saying that Odin no longer wills that he swing the sword. He tells Hjordis to preserve carefully the pieces of the broken sword; the son she bears in her womb shall yet swing the sword when welded anew, and win thereby a glorious name. At dawn Sigmund dies. Hjordis is borne off by Vikings and, after the birth of her son, she becomes the wife of the Danish prince Alf.
The son of Hjordis was called Sigurd. He grew up a boy of wondrous strength and beauty, with eyes that sparkled brightly, and lived at the court of King Hjalprek, the father of Alf. Regin, the dwarfish brother of Fafnir, was his tutor. Regin welds together the pieces of the broken sword Gram, so sharp and strong that with it Sigurd cleaves Regin's anvil in twain. With men and ships that he has received from King Hjalprek Sigurd goes against the sons of Hunding, whom he slays, thereby avenging the death of his father. Regin has urged him to kill Fafnir and take possession of the hoard. On the Gnita Heath he digs a ditch from which, as the dragon Fafnir passes over it, he plunges the sword into his heart. The dying Fafnir warns him of the curse attached to the possession of the gold; also that Regin is to be guarded against. The latter bids him roast the heart of Fafnir. While doing so he burns his finger by dipping it in the blood to see if the heart is done, and to cool his finger puts it into his mouth. Suddenly he is able to understand the language of the birds in the wood. They warn him to beware of Regin, whom he straightway slays. The birds tell him further of the beautiful valkyrie Brynhild, who sleeps on the fire-encircled mountain awaiting her deliverer. Then Sigurd places Fafnir's hoard upon his steed Grani, takes with him also Fafnir's helm, and rides away to Frankenland. He sees a mountain encircled by a zone of fire, makes his way into it and beholds there, as he deems it, a man in full armor asleep. When he takes off the helmet he finds that it is a woman. With his sword he cuts loose the armor. The woman wakes and asks if it be the hero Sigurd who has awakened her. In joy that it is so, Brynhild relates to him how Odin had punished her by this magic sleep for disobedience, and how that she had yet obtained from him the promise that she should be wakened only by a hero who knew no fear. She now teaches Sigurd many wise runes, and tells him of harm to fear through love of her. In spite of all, however, Sigurd does not waver, and they swear an oath of mutual faithful love.
Next Sigurd comes to King Gjuki at the Rhine, and joins in friendship with him and his sons Gunnar and Hogni. Queen Grimhild gives Sigurd a potion which causes him to forget Brynhild and be filled with love for her own daughter Gudrun, whom he marries. Gunnar now seeks Brynhild for wife, and Sigurd goes with him on his wooing-journey. They come to the castle encircled by fire, where Brynhild lives. She will be wooed only by him who will ride to her through the flames. Gunnar tries in vain to do this, even when mounted on Sigurd's steed Grani. Sigurd and Gunnar then exchange shapes and the former spurs Grani through the flames. He calls himself Gunnar the son of Gjuki, and finally Brynhild consents to become his wife. Three nights he shares her couch, but always his sharp sword lies between them. He takes the ring from her finger and places in its stead one from Fafnir's treasure. Then he exchanges form again with Gunnar, who is soon after wedded to Brynhild. Only now does Sigurd recollect the oath that he once swore to Brynhild himself.
One day Brynhild and Gudrun are bathing in the Rhine. A quarrel arises between them when Brynhild takes precedence of Gudrun by going into the water above her in the stream, saying that her husband is a braver and mightier man than Gudrun's. Gudrun retorts by revealing the secret that it was Sigurd in Gunnar's form, and not Gunnar himself, who rode through the flame, and in proof thereof shows her the ring taken by Sigurd from Brynhild's finger. Pale as death, Brynhild goes quietly home: Gunnar must die, she says in wrath. Sigurd tries to pacify her, even offering to desert Gudrun. Now she will have neither him nor another, and when Gunnar appears she demands of him Sigurd's death. In spite of Hogni's protest Gunnar's stepbrother Gutthorm, who has not sworn blood-friendship with Sigurd, is got to do the deed. He is given the flesh of wolf and serpent to eat in order to make him savage. Twice Gutthorm goes to kill Sigurd, but cowers before the piercing glance of his eyes; at last he steals upon Sigurd asleep and thrusts his sword through him. The dying Sigurd hurls the sword after the fleeing murderer and cuts him in two. To Gudrun, who wakes from sleep by his side, he points to Brynhild as the instigator of the crime, and dies. Brynhild rejoices at the sound of Gudrun's wailing. Gudrun cannot find relief for her grief, the tears will not flow. Men and women seek to console her by tales of greater woes befallen them. But still Gudrun cannot weep as she sits by Sigurd's corpse. At last one of the women lifts the cloth from Sigurd's face and lays his head upon Gudrun's lap. Then Gudrun gazes on his blood-besmirched hair, his dimmed eyes, and breast pierced by the sword: she sinks down upon the couch and a flood of tears bursts at length from her eyes.
Brynhild now tells Gunnar that Sigurd had really kept faith with him on the wooing journey; but she will live with him no longer and pierces herself with a sword, after foretelling to Gunnar his future fate and that of Gudrun. In accord with her own request she is burned on one funeral-pyre with Sigurd, the sword between them as once before.
Atli,[1] king of the Huns, now seeks Gudrun for wife. She refuses, but Grimhild gives her a potion which causes her to forget Sigurd and the past, and then she becomes the wife of Atli. After Sigurd's death Gunnar had taken possession of the Niflungen hoard, and this Atli now covets. He treacherously invites Gunnar and the others to visit him, which they do in spite of Gudrun's warnings, first of all, however, sinking the hoard in the Rhine. On their arrival Atli demands of them the hoard, which, he says, belongs of right to Gudrun. On their refusal he attacks them. Hosts of fighters on both sides fall and in the end Gunnar and Hogni, the only two of their number remaining, are bound in fetters. Gunnar refuses Atli's command to reveal the hiding-place of the hoard, bidding them bring to him the heart of Hogni. They kill a servant and bring his heart to Gunnar; but Gunnar sees how it still quivers with fear, and knows it is not the heart of the fearless Hogni. Then the latter is really killed, and his heart is brought to Gunnar, who cries exultingly that now only the Rhine knows where the hoard lies hidden. In spite of Gudrun Atli orders that Gunnar be thrown into a den of serpents. With a harp communicated to him by Gudrun he pacifies them all but one, which stings him to the heart, and thus Gunnar dies. Gudrun is nominally reconciled with Atli, but in secret plans revenge for the death of her brothers. She kills Atli's two sons, gives him at a banquet their blood to drink and their hearts to eat. In the night she plunges a sword into his own heart, confesses herself to him as his murderer, and sets fire to the castle, in which Atli and all his remaining men are consumed.
[1] That is, Attila; the Etzel of the Nibelungenlied.
3. The Saga as preserved in the Nibelungenlied
The saga as we find it in the German Nibelungenlied differs very widely in form and substance from the Northern version