Iver Arneson

I am trying to find information on Iver Arneson & Gurie Dybendahl, my great grandparents. My grandfather, Arne Arneson, and his brother Austin were born in E. Gal Hallingbal. I heard that this family came to the United States around 1883 but have no other information. Would appreciate any information on ideas where they may have departed from. Any help would be greatly appreciated. Thanks