Per Sexe and Brita Sexe

Per and Brita Jonson came from the Sexe Gaard in Ullensvang Norway. They Immigrated in 1902 they were brother and sister. According to the Bygdabok for the area Brita married a farmer in Mn. I know from a cousin in Norway, Per went to washington state where he changed his name to Peter Saxe. We have been looking and looking for the descendants of these two and have had no luck what so ever. We believe Brita married an Olson. And had 4 children before she died. They say she died before they were confirmed. I have a picture of her and her husband taken in Chicago, but the book says she married a man from Minnesota. If anyone could be of some help I would appreciate it. The letters from Per and Brita burned in an accidental fire on the farm in Norway. Their parents were Father Jon Person Årvik 1840-1915 Mother, they married in 1873 Kari Jonsdtr Sekse 1838-1901 Children Jon Sexe 1876-1954 N. Sekse, Ullensvang Per Sexe 1877- imm. 1902 Brita Sexe 1881-imm. 1902 Thank you, Amy