↑ "United States Census, 1870," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MZG4-LRC : 12 April 2016), Claude E Furwelligar in household of James Furwelligar, Pennsylvania, United States; citing p. 1, family 5, NARA microfilm publication M593 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 552,825.
↑ "United States Census, 1880," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MWX5-BGS : 15 July 2017), Claud Terwilliger in household of Lucinda Terwilliger, Mill Creek, Clarion, Pennsylvania, United States; citing enumeration district ED 84, sheet 420D, NARA microfilm publication T9 (Washington D.C.: National Archives and Records Administration, n.d.), roll 1118; FHL microfilm 1,255,118.