"Wisconsin, County Marriages, 1836-1911," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XRFS-J1D : 16 March 2018), John Hemmersbach and Mary Magdalene Betz, 24 Jul 1869; citing Jefferson, Monroe, Wisconsin, United States, Wisconsin Historical Society, Madison; FHL microfilm 1,292,393.