 The results of this accident made their way into the Icelandic poetic tradition".Otto Höfler theorized that Dagr may be related to (or may be the same figure as) the hero Svipdagr (whose name means "the suddenly dawning day") who is attested in various texts.Among other sources, this figure is found in two poems compiled together and known as "Svipdagsmál" in the "Poetic Edda", the Prologue to the "Prose Edda", and by the name Swæfdæg in the mythical genealogies of the Anglian houses of Anglo-Saxon England.