Johannes immigrated from Flom, Norway to Koskonong, Wisconsin in 1847. Moving furthur west, he settled in Black Hammer and married Mari Otterness. Eight children were born to this family. The Berkvam-Otterness farm in Norway was purchased by the Flom community to be a museum. The houses were in good condition back in the 1980's and contained hand made furniture dating back to 1826-1846 made by Ole Otterness.