I am looking for information on my great grandmother, Isabel Dokken, Norway 1857, who married Thomas Berg, Norway 1858. They lived in Rugby, N.D. and are buried there. She had brothers named Bert Dokken, Pleasantlake, N.D. and Erik Oley Dokken. She also had a sister, Mrs. M.T. Hazen, Devil's Lake, N.D.
Any help would be appreciated.