Egeland - Knutson Family

I am looking for information on Ole Martin Egeland and Julia Ellen Knutson Egeland. Both were born in Stavanger, Norway. Ole Martin Egeland was born November 10, 1845 and Julia Knutson Egeland was born July 22, 1857. Both are also buried in the Groff Cemetery in Mill Grove, Missouri. I have not been able to find them on passenger list or make a connection to a ship or even a port.