In Norse mythology, Víðarr (Old Norse, possibly "wide ruler", sometimes Anglicised as Vidar, Vithar, Vidarr, and Vitharr) is a god among the Æsir associated with vengeance. Víðarr is described as the son of the god Óðinn and the jötunn Gríðr, and is foretold to avenge his father's death by killing the wolf Fenrir at Ragnarök, a conflict which he is described as surviving. He will press one foot on Fenrir's bottom jaw, and will take hold of his other jaw and tear the wolf apart. He is one of the gods that will rule the new world when it is created. His hall in Ásgarðr is Vidi. Víðarr is attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources, the Prose Edda, written in the 13th century by Snorri Sturluson, and is interpreted as depicted with Fenrir on the Gosforth Cross. A number of theories surround the figure, including theories around potential ritual silence and a Proto-Indo-European basis.