Which member of this family line is the one who emigrated to the US from Norway? What is the birthyear of that person? What year did they emigrate to the US? Where did they live in the US and where can they be found in the US censuses? Did they have any brothers/sisters/other close relatives who also emigrated to nearby? (Names and vital dates as above if possible)
Something has to be able to be sorted out.These are the questions and answers I'd start with.