A valkyrie who has been asleep for years, imprisoned by her own armor. When Sigurth frees her, she tells him her story. Two kings were fighting, Agnar and Hjalm-Gunnar, and Odin had promised victory Hjalm-Gunnar. Sigerdrifa killed Hjalm-Gunnar in battle, and in retaliation Odin shot her with a sleep thorn ( Crawford 253). She proceeds to give Sigurth advice on how to act and behave in the world in return for her freeing him.

Brynhild is usually portrayed as a Valkyrie or shield-maiden. She is Attila the Hun's sister. Sigurth disguises himself as Gunnar to woo her. He even sleeps with a sword between them because he is already married. After his death at the hands of Gotthorm, she commits suicide by stabbing herself with his sword and burning on his funeral pyre with him.

In another poem, she is burned on a wagon covered in cloths and is said to have ridden long the road to Hel. She tells of teh story in which she killed Hjalmgunnar, which leads a lot of scholars to believe Brnynhild and Sigerdrifa are the same person. Odin puts her to sleep for the same reason (Crawford 290).