Danish and Norwegian. Anderson, with "son", is of Scottish and
English origin. Andersen with "sen" is, like I wrote, Danish and
Norwegian. As a pretty general rule, names that end in "sen", which
means son of, are Scandinavian, and to a lesser extent North German
or Dutch. Other names that end in "sen" are Jensen (Danish,
Norwegian), Christensen (Norwegian), Hansen (Norwegian, Danish),
Olsen (Norwegian), etc. Danish and Norwegian. Anderson, with "son",
is of Scottish and English origin. Andersen with "sen" is, like I
wrote, Danish and Norwegian. As a pretty general rule, names that
end in "sen", which means son of, are Scandinavian, and to a lesser
extent North German or Dutch. Other names that end in "sen" are
Jensen (Danish, Norwegian), Christensen (Norwegian), Hansen
(Norwegian, Danish), Olsen (Norwegian), etc.