... The rich imagination of the North could not fail to preserve the Eastern myths of natural appearances and animals with their myths, and these ideas are as usual reflected in the names of the race.  In the Edda, Nôtt, or "night," the dark, one of the Jotun, is the wife of Dellingr, the brilliant and beautiful, one of the Æsir, and their son is Dag or Day.  Mother and son each have a chariot in which they career round the sky, in pursuit of one another. (History of Christian Names, Yonge, 1884)