Johannes Olsen/Bergit Braaten

My gr-gr grandfather was Johannes Olsen Haugen born 19 August 1865 in Eiker. His wife, Bergit Braaten, was born 29 October 1863 in Hallingdal. They immigrated to the US landing at Ellis Island on 31 August 1893 on the Hekla from Copenhagen. Prior to immigrating, they had two children, Olga, born on 1 November 1889, and Margit, born on 08 June 1891. They appear to have been living in Eiker prior to their departure. Bergit had a brother Iver Olsen born around 1865 who also immigrated to the US about the same time. I have attempted to find more information on the families of Johannes and Bergit in Norway, but have unable to find anything more. Any help or recommendations would be greatly appreciated! A bible in the possession of Iver's dated 1871 lists a name of Kari Petr. Engebreteon, but I have no idea of any possible family connection. Jon