<P> Andersen (Danish pronunciation: (ˈɑnɐsn̩)) is a Danish - Norwegian patronymic surname meaning "son of Anders" (itself derived from the Greek name "Ανδρέας / Andreas", cf . English Andrew). It is the fifth most common surname in Denmark, shared by about 3.2% of the population . </P> <P> From the same root--the given name Andreas--derives the surname Andreasen Danish pronunciation: (ænˈdʁɛːˀæsn̩) (cognate Andreassen) and Andresen Danish pronunciation: (ænˈdʁɛːˀsn̩). </P>

Where does the last name andersen come from