Nittedal has a couple of published bygdeboker (history and genealogy) that might have info for that family.
--------------
Looks like Martin may have gone back home to Nittedal, married and lives there in 1865 -
http://www.rhd.uit.no/folketellinger/ftliste_e.aspx?ft=1865&...

and in 1875 is that his widowed father on the same farm as Martin? hmmm
http://digitalarkivet.uib.no/cgi-win/WebCens.exe?slag=visbas...