Seeking information on Haugens and Olsons

I am looking for information on the following ancestors: - Martin C. Haugen (son of Kristian Kristenhaugen and Karen Kinseth, emigration year approx. 1884, later married Inger Olson and settled in Fort Dodge, Iowa USA) - Birth year approx. 1863 - Christaphor Olson (emigration year approx. 1861, later married Susana and settled in Iowa. Father of Inger) - Birth year approx. 1847 Martin and Inger were my Great-Grandparents, and I'd treasure any information on the Haugens and Olsons. I've been doing some extensive work on my ancestry and hit a bit of a wall there. I'd love to know their origins in Norway, region of origin, etc. I can't find anything about Kristian, Karen, Christaphor or Susana prior to their US arrival. Many thanks for any help! [:)] In the meantime, I'll continue to look through the wonderful lists on this site.