You wrote, "Otto married Pernella O. Loveng, born in Norway in 1892, Arrived New York 1885." Born in 1892?!!
1920 Wisconsin census:
Name: Pernille Bjorkman
Age: 56
Birth Year: abt 1864
Birthplace: Norway
Home in 1920: Bangor, La Crosse, Wisconsin
Immigration Year: 1885
Relation to Head of House: Wife
Marital Status: Married
Spouse's Name: Otto Bjorkman
Father's Birthplace: Norway
Mother's Birthplace: Norway
Household Members:
Name Age
Otto Bjorkman 59
Pernille Bjorkman 56
Theodore Bjorkman 15, born WI
Melvin Bjorkman 12, born WI
Could this be your Pernille in the 1865 Norway census, living at the Løvengstuen farm in Aamot, Hedmark County?
http://digitalarkivet.uib.no/cgi-win/WebCens.exe?slag=visbas...