Aurvandil was a warrior of renown in Norse Mythology, and the husband of Groa.
In the God of War Series
The Lost Pages of Norse Myth
Aurvandil was a Norse warrior that at some point married Groa, a seer. At some point, Thor asked for Aurvandil's help for a quest in Vanaheimr. During the quest, Aurvandil was intentionally killed by Thor for an unknown reason. Thor returned to Groa and made up a story where Aurvandil suffered from a frost-bite during a battle, and had to be carried away, until Thor lost him in a tundra.
Groa, in search of her husband, started collecting ancient tomes and their runic incantations to augment her prophetic powers. In response to this, Odin hid the truth about Aurvandil's death with a spell.
His wife was eventually killed by Odin for refusing to share her knowledge about Ragnarok with the All-Father. Odin revealed the truth about Aurvandil's death, and then proceeded to strangle Groa, taking her life and her knowledge.