Hello Rebecca, I am Earl Dahlgren's daughter. Oliver was my grandfather. I know that Oliver's parents were Peter Dahlgren and Anna Scott. Peter came into the US through Montreal and settled near Roseau, MN. The relatives in Roseau have done some extensive research into the family and have even traveled to Sweden to visit relatives there. Lyle's family lives in Duluth. Is there anything in particular that you want to find out?