In Norse mythology, Víðarr (Old Norse: , possibly "wide ruler", sometimes anglicized as Vidar , Vithar, Vidarr, and Vitharr) is a god among the Æsir associated with vengeance. Víðarr is described as the son of Odin and the jötunn Gríðr and is foretold to avenge his father's death by killing the wolf Fenrir at Ragnarök, a conflict he is described as surviving. 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. Attestations Poetic Edda In the Poetic Edda, Víðarr is mentioned in the poems Völuspá, Vafthrúdnismál, Grímnismál, and Lokasenna. In stanzas 54 and 55 of the poem Völuspá, a völva tells Odin that his son Víðarr will avenge Odin's death at Ragnarök by stabbing Fenrir in the heart: Then comes Sigfather's | mighty son, Vithar, to fight | with the foaming wolf; In the giant's son | does he thrust his sword Full to the heart: | his father is avenged. In stanzas 51 and 53 of Vafthrúdnismál, Vafþrúðnir states that Víðarr and his brother Váli will both live in the "temples of the gods" after Surtr's fire has ceded and that Víðarr will avenge the death of his father, Odin, by sundering the cold jaws of Fenrir in battle: In stanza 17 of Grímnismál, during Odin's visions of various dwelling places of the gods, he describes Víðarr's (anglicized as "Vidar") residence: Brushwood grows and high grass widely in Vidar's land and there the son proclaims on his horse's back that he's keen to avenge his father. According to Lokasenna, Loki rebukes the gods at the start of the poem for not properly welcoming him to the feast at Ægir's hall. In stanza 10, Odin finally relents to the rules of hospitality, urging Víðarr to stand and pour a drink for the quarrelsome guest. Víðarr follows his orders. Loki toasts the Æsir before beginning his flyting. Prose Edda Víðarr is referenced in the Prose Edda books Gylfaginning and Skáldskaparmál. Víðarr is referenced in the book Gylfaginning in chapters 29, 51, and 53. In chapter 29, Víðarr is introduced by the enthroned figure of High as "the silent god" with a thick shoe, that he