Some of the first settlers of this family name were:
Magnusen Settlers in United States in the 19th Century
Christ, Gertrude, Lars, and Magnus Magnusen, who arrived in New York in 1850
Contemporary Notables of the name Magnusen (post 1700)
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Warren Grant Magnusen (b. 1905), Senior Senator from Washington (Democrat) in the U.S. Senate and a member of the House of Representatives in the U.S. Congress (1936-45)
Denmark
England
Germany
Norway
Scotland
Sweden
Magnusen migration to the United States 