Mind or thought amounts to a mythical character in northern fancy.  The word is hugr, the same with hu, still the Scandinavian word for thought, as heuge is in Holland, all coming from old verbs represented by the Maeso-Gothic gahugan, and Anglo-Saxon gehygan... At Tours, the Northern Lights are le carrosse du roi Hugues, perhaps originally from some connection with speed of thought, though latterly mixed up with Hugues Capet. (History of Christian Names, Yonge, 1884)