Family in La Cross, Wisc from Norway

I've been unable to make any progress tracing my mother's Norwegian roots prior to emigration to the US. Hans Moe b 28 Feb 1849 in Norway arri 1869 1900 census Anna Hanson b Sep 1845 in Norway arr 1868-1869 conflict in 1880/1900 US census married abt 1870 (30 yrs married per 1900 census. Lived in Onalaska, La Cross Had 5 Moe children all3 Nov 1872-28 Aug 1916-1916 Herman 8 Apr 1875-14 Feb 1959 (died Hennepin Minn Magdalin abt 1879-? Adolf 10 Dec 1879 - ? Helga Alide 28 Mar 1885-20 Apr 1919 Anna's parents per the Norwegian Lutheran church 1875-1940 records found for daughter Helga birth appear to show father's name was Hans Hanson and Mother was Karen.