I have seen the tombstone of Bjorn and Ingeborg Hustvedt at the Western Koshkongong Church Cemetary. The dates are: Bjorn-b. 1822, d. Jan 19, 1903
Ingeborg-b. 1828, d. Sep 18,1899
I also have an Aasne Olsdatter Hustvedt(sometimes spelled Hustveit), she married Aslak Olavsson Skolas in 1848. She was b. Apr. 10, 1825 and d. Jun 19, 1912.
If you have any info if these two are related please let me know.