Toastenson

I am trying to find info on Ander Tostenson/Tustison born 1830 Telemark, Norway married Gunhild Unknown born 1835 Telemark. They went to the USA before 1857 where their first child Thomas A Tostenson was born in Illinois in 1857 then they went to Minnesota where they had two daughters. I believe they were married in Norway. Thank you for your help. Renee Sanders, OREGON, USA[:)]