His presentation of the story is very similar to that found in the "Völsunga saga" (see below), but is considerably shorter. Gudrun is introduced as the daughter of Gjúki and Grimhild, full sister to Gunnar and Högni, and half-sister to Guthorm. Gudrun marries Sigurd when he comes to Gjúki's kingdom. When Sigurd returns from aiding Gunnar in his wooing of Brunhild, Sigurd and Gudrun have two children, a son named Sigmund and a daughter named Svanhild. Some time later, Gudrun and Brunhild have a quarrel while washing their hair in a river: Brunhild says that she cannot have the water that touched Gudrun's hair touch hers, for she is married to the braver husband. The fight leads Gudrun to reveal that it was Sigurd in Gunnar's shape who rode through the flames to woo Brunhild, producing a ring that Sigurd had taken from Brunhild as proof. This knowledge leads Brunhild to agitate for Sigurd's murder, which is performed by Gudrun's half-brother Guthorm, who also kills the young Sigmund. Following this, Gudrun is married to king Atli (Attila). When Atli invites Gudrun's brothers and kills them for their gold, Gudrun kills her two sons by Atli. She makes their skulls into drinking goblets and cooks their hearts, giving them to Atli to eat. She then tells Atli what she has done, and later kills Atli together with Högni's son. She then burns down the hall. Afterwards, Gudrun tries to drown herself in the sea, but she washes ashore in the land of king Jonak. Jonak marries her and has three sons with her, Sorli, Hamdir, and Erp. Svanhild, Sigurd's daughter, is also raised there, before being married to king Jormunrek. When Jormunrek kills Svanhild for adultery, Gudrun tells her sons to kill him, giving them special weapons that could not be pierced by iron. The sons die in the attempt, leading to the extinction of Gjúki's line. The "Poetic Edda", a collection of heroic and mythological Nordic poems, appears to have been compiled around 1270 in Iceland, and assembles mythological and heroic songs of various ages.