Shield-maiden forgetfulness given to Sigurðr so he forgets his previous relationship with her. Brynhildr is upset not only for the loss of Sigurðr but also for the dishonesty involved. Similar to her male counterparts, the shield-maiden prefers to do things straightforwardly, without the deception considered stereotypically feminine in much of medieval literature. She enacts her vengeance directly, resulting in the deaths of herself, Sigurðr, and Sigurð's son by Guðrún. By killing the child, she demonstrates an understanding of feud and filial responsibility; if he lived, the boy would grow up to take vengeance on Brynhildr's family. Guðrún has a similar concern
Norse cosmology Norse cosmology The cosmology of Norse mythology has "nine homeworlds" or "nine realms", unified by the world tree Yggdrasil. Mapping the nine worlds escapes precision because the "Poetic Edda" often alludes vaguely. The Norse creation myth tells how everything came into existence in the gap between fire and ice, and how the gods shaped the homeworld of humans. A cosmic ash tree, Yggdrasil, lies at the center of the Norse cosmos. Three roots drink the waters of the homeworlds, one in the homeworld of the gods, the Æsir, Asgard, one in the homeworld of the humans, Midgard, and one in