I have found the Moger name and Moger family members in the Channel Islands (Guernsey and Jersey) and in Maine et Loire, France. A surname website offers some commentary athttp://www.surnamedb.com/surname.aspx?name=Moger
The deep ancestry project of the National Geographic Society might eventually shed some light on the migrations and origins if a connection is established between Mauger, Moger, and Mosher.
I have also found in Minnesota a family Moger of Norwegian descent, which might further connect the Normans (Norsemen) of France and England with the Norsemen/Vikings of Scandinavia. Mauger in the 11th Century was apparently a Bishop of Rouen and an Uncle of William the Conqueror (Duke of Normandy). William the Conqueror was apparently related to Scandinavian rulers.
Further investigation may be useful.