Research- Family Armand Lund, Andersen, Nordstrom

Hello: I am trying to locate information on my father's birth parents and heritage. Information so far for my father is: Name: Armand Engelhart Lund Born : July 25, 1906 Born in Tromso, Norway He emigrated to Canada April 20, 1927 on the S.S. Bergenfjord via New York...I think the ship landed in New York and then he came to Canada as a fisherman (fisker) ?. My father's mother's first name was either Filomena or Wilhamena, but last name not known. My father's birth father died in an accident and his mother re-married. My father had 2 half brothers both younger than him. One brother, lived in Troms, Norway, his name was Erling Andersen. I have lost contact with him. The other half brother's name is Bjorne Nordstrom and must have lived close by to Troms. I do not have any more names to check on, but know there were some cousins in the USA, perhaps in the Portland Oregon area. Likely all are deceased. The two half brothers may still be alive. I am anxious to get on with my research, but now do not know where to start, can anyone give me some helpful hints or suggestions. I would truly appreciate it. I would love to hear from any relatives or names of them. Regards, Nancy