Ragnhild dau of Guri Ellingsen Ole Olsen Flaa Hal

Ragnhild born July 10, 1870 in Flaa Hallingdal to parents Guri Ellingsen and Ole Olsen. She had a brother by the name of Elling Olsen. Father Ole died when Ragnhild and Elling were young (1870's). It is said that Ole was a fisherman and drowned at sea. Not sure about this as Flaa is inland. Any comments? Family records state that Ragnhild immigrated to the US when she was 12. She traveled with an uncle to Wisconsin. I found (in Digitalarkivet) a Ragnhild Olsen (age 12) and an Ole Larsen (age 60) traveling on the ship called Angelo in 1884 (October 17). However this would make Ranghild birth in the year 1872 rather than 1870. I have a copy of Ragnhild's marriage certificate from Wisconsin and it states that her parents names were Ole Olsen and Guri Ellingsen. Ragnhild's brother, Elling, did not immigrate. I also have a picture of a Elling and his family taken in front of a "Hotel Brumunddalen" that I presume is in the town of Brumunddal near Hamar. My problem is that I cannot find any solid leads in Norway. I have searched the 1865 & 1875 census records for this family as well as the 1900 census records for Elling Olsen but no luck. Does anyone have any suggestions? Thank you very much - Dan Olsen