Brynhild
;)
was a Valkyrie who defied Odin and so was banished to earth and imprisoned within a ring of fire. When Sigurd braved the fire and broke her charmed sleep, they fell in love. He gave her his ring, Andvarinaut, unaware of its curse. On his travels he was bewitched by Grimhild into betraying Brynhild, first by marrying Gudrun and the by helping Gunner win Brynhild. On discovering Sigurd's betrayal, Brynhild planned his death, but then killed herself in despair.