Corresponding to Proserpine as goddess of the dead is the old Norse goddess Hel (Gothic Halja), whom Saxo Grammaticus calls Proserpine.
A nearer parallel to Greek colonization may be found in Iceland, whither the adherents of the old Norse polity fled from the usurpation of Harold Haarfager; and the early history of the English pale in Ireland shows, though not in orderliness and prosperity, several points of resemblance to the Roman colonial system.
Walrus tusks and walrus hides, which in the days of the old Norse settlements were the chief articles of export, are now of little importance.
They appealed to the old Norse instinct for wandering - an instinct which, as it had long before sent the Norseman eastward to find his El Dorado of Micklegarth, could now find a natural outlet in the expedition to Jerusalem: they appealed to the Norman religiosity, which had made them a people of pilgrims, the allies of the papacy, and, in England and Sicily, crusaders before the Crusades: finally, they appealed to that desire to gain fresh territory, upon which Malaterra remarks as characteristic of Norman princes.
The name Visby is derived from the old Norse y e (sanctuary) and by (town).
In old Norse times, the thrones of the sea-loving Danish kings were fabricated, saith tradition, of the tusks of the narwhale.
Lastly, and perhaps most of all, there is the old Norman bloodfeud with Constantinople, as old as the old Norse seeking for Micklegarth, and keen and deadly ever since the Norman conquest of the Greek themes in South Italy (1041 onwards).
To these must be added a large number of Old Norse writings including the older Edda and the prose Edda (the chief authorities for Northern mythology), Islands Landnamabok and many sagas dealing with the history of families in Iceland (such as Eyrbyggia Saga) or with the lives of Norwegian and other kings, both historical and legendary (in Heimskringla, Fornmanna Sogur and Rafn's Fornaldar Sogur Norr landa).
The forms of the Danish king's name given by the Frankish historians are corruptions of the name of which the primitive Germanic form was Hugilaikaz, and which by regular phonetic change became in Old English Hygelac, and in Old Norse Hugleikr.
The zeal of the crusader came upon Bohemund: it is possible, too, that he saw in the First Crusade a chance of realizing his father's policy (which was also an old Norse instinct) of the Drang nach Osten, and hoped from the first to carve for himself an eastern principality.