Erik Kristian Johnsen 1863-1923

I am searching for genealogy on Erik Kristian Johnsen, b. 1863 in Stavanger, Norway and died in St. Paul, Minnesota in 1923. He was a Luthern minister and professor at Luthern Seminary in St. Paul. I think he married Amunda Sorensen in Norway and they emigrated to the U.S. I don't know who his father is (possibly Erik) or anything about the family or older generations. Would appreciate anything you can offer. Rolf