 Dvalin is listed as one of the four stags of Yggdrasill in both "Grímnismál" from the "Poetic Edda" and "Gylfaginning" from the "Prose Edda".In the "Poetic Edda" poem "Völuspá", Dvalin is mentioned as a name in the listing of dwarves, and again in a later stanza as a leader taking a host of dwarfs from the mountains to find a new dwelling place