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About the Hansen surname. This last name was originally a typical Scandinavian Patronymic: http://wiki.geni.com/index.php/Patronymics It was only introduced as a last name or family name around 1850-1900. Hansen is a Danish-Norwegian patronymic surname, literally meaning son of Hans. It is the third most common surname in Denmark, shared by about 4.3% of the population. Hansen is the single most common surname in Norway, not counting spelling variations such as Hanssen, which are also quite common.
Some Hansen families though are likely to descend from Man-Nesh-Sha-Ha son of A-Wa-ya-Se-Pa,the first to bear the ancient s'waya name Hans,of whom Hansa region in general may have got its name too by colonists after the exile from his family - speaking then eskimaw and celtic dialects.