Father's Name: George Knapp
Father's Birthplace: Reedsburg, Sauk, Wi
Mother's Name: Edith Butts
Mother's Birthplace: Ableman, , Wi
Sources
"Wisconsin, Births and Christenings, 1826-1926," index, FamilySearch (https://familysearch.org/ark:/61903/1:1:XR5S-MVM : accessed 29 March 2015), Stanley Whistance Knapp, 03 Dec 1897; citing North Freedom, Sauk, Wisconsin, reference item 1 p 77; FHL microfilm 1,305,586.
"United States Census, 1900," index and images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MM2Z-LXM : accessed 29 March 2015), Stanley W Knapp in household of George ? Knapp, Freedom town North Freedom village, Sauk, Wisconsin, United States; citing sheet 2B, family 47, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,241,816.
"United States Census, 1940," index and images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VY4T-LQP : accessed 29 March 2015), Stanley Knapp, Ward 3, Lewiston, Election Precinct 14, Nez Perce, Idaho, United States; citing enumeration district (ED) 35-25, sheet 3A, family 48, NARA digital publication T627 (Washington, D.C.: National Archives and Records Administration, 2012), roll 751.