Looking for info on a John A Loberg

He originally came to the States about 1870-1871. He was born in Oct 1859. In the 1880 census, his occupation was lathing houses. He came with his brother Edward b abt 1856, and his sister Bertha, b abt 1865. I have no other information on any parents. John married Emma b Oct 1863 born in Sweden. I don't know what part of Norway they came from other than a Loberg farm. Is there anyone that can help me[?] I would really appreciate anything.