Modahl & Halvorsen Ancestry

My ancestors names Daniel Olson Modahl, Marit Modahl and Marie Halvorsen & Enval Halvorsen. I have found several of the Modahl information, but cannot find the Halvorsen. Marie emmigrated in 1865 from Siljin Telemark. Enval's name has been spelled Engval, Engvold among other spellings. Does anyone have any information on these? They settled in Minnesota and then to Tacoma, WA. Thank you