Looking for Larsen IN Deluth Minnesota

my father was born jan 6, 1905 in deluth, minnesota. he ran away from home when he was 13 and never returned. his father's name was either ole or olaf and mother's name elsie olsen. brothers names were charles, nils and i think karl. charles was in the coast guard and my dad was a merchant seaman. he never talked about his family and what little we learned was from our mother. i do have other info on my father thru the fbi and according to them, my grandparents were still alive in the 1950's