Saxberg/Saksbergs in Wisconsin?

Hi there, I am new to this forum and am working with my mom to trace our heritage to Norway. Mom is 79 years old and I am trying to talk her into taking a vacation to Norway this summer. I hope to gather a lot of information for her to sift through before she makes the trip! My ancestors came over in 1868 from Biri, Norway, and settled in Barron County, Wisconsin. Their names were Lars & Severina Saxberg (possibly spelled Saksberg). These were my mom's grandparents. I am looking for any information about relatives - absolutely anything about anyone with the Saxberg name. Any replies at all would be interesting for my mom to read. If you have any other suggestions or searching routes I should take, I would be happy to hear any and all ideas! Thanks, Janelle Glaser