Taralson

Does anyone know anything about: The Tarlason. I am looking for information on Anna T. Tarlason born Jan 1834, Norway. came to the US in 1886. She had two sons, Olaf(Ole),born 1876, in Norway, and Sven born 1877, in Norway, and one daughter Tillie Anna, born Jan 1872, in Norway.. Is there any way of finding the town, that they were born in Norway? I know that in 1900, they lived in Chicago, on Grand Ave.(Anna and Sven) Tillie was married to Thomas Burkemo. Ole was in Wisconsin. I'm not sure that the spelling is correct- could it been Taraldson, or something else. Any ideas as to where I could look. I know that Anna had 7 children, with 3 living in 1900, all 7 born in Norway. Thanks for any help. Donna [:)]