Pedersen and Olsdatter

I am a newbie to Norwegian genealogy and can use all the help anyone can offer. Seeking info on Amund Pedersen b. abt 1866 and Mari Ingeborg Olsdatter b. abt 1872. In 1900 I believe they were living Kraabelsmoen. Had female children Dorthea, Magna and Asta Pauline Amundsdatter. Male children were Petter and Anton Amundsen. I believe Thea and possibly Petter immigrated to the US in 1908.