Yes, I was thinking about buying copies of Hans Pedersen Svingen's naturalization record. The North Dakota Naturalization Records Index has two hits for Norwegian-born Hans P. Svingen: his declaration of intention on November 22, 1884 in Rolette County and naturalization on September 24, 1890 also in Rolette County.
As for the 1885 census, there is a "Hans Livingen," age 27, living in Rolette County. I'm not 100% sure if he is the Hans who I'm looking for, although the ages match up. His brother is listed as "Peder Swinger."