Toensing, the Minnesota Legislative Manual, 1873, and the Fifteenth Legislature of Minnesota: Biographical Sketches, 1873 list his last name as Osmundson. The Minnesota Legislative Manual, 1872 lists Osmandson.
The Fifteenth Legislature of Minnesota: Biographical Sketches, St. Paul: Press Printing Company, 1873 lists Wheeling as his city of residence. Toensing and the Minnesota Legislative Manual, 1873 list Northfield.
He came to the United States in 1850 and settled in Wisconsin. He moved to Rice County, Minnesota in 1856.