Odin
In Germanic mythology, Odin (; from , ) is a widely revered god. In Norse mythology, from which stems most surviving information about the god, Odin is associated with wisdom, healing, death, royalty, the gallows, knowledge, battle, sorcery, poetry, frenzy, and the runic alphabet, and is the husband of the goddess Frigg. In wider Germanic mythology and paganism, Odin was known in Old English as ', in Old Saxon as ', and in Old High German as ' or ', all stemming from the reconstructed Proto-Germanic theonym .
Óðr
Scholar Rudolf Simek says that since Óðr appears in a kenning employed by the 11th century skald Einarr Skúlason (in "Skáldskaparmál") and in the "Poetic Edda" poems "Völuspá" and "Hyndluljóð", Óðr is not a late invention. Simek says that "the most obvious explanation is to identify Óðr with Odin," noting the similarity between their names (and agreeing with the Ullr/Ullin parallel), the long absences (comparing them to Odin's exile in "Gesta Danorum"), and Óðr's marriage with Freyja.