"Massachusetts Births, 1841-1915," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:FX82-CQ3 : 11 March 2018), Onezeme Pontbrilliant, 11 Mar 1878, Spencer, Massachusetts; citing reference ID #P 338, Massachusetts Archives, Boston; FHL microfilm 1,428,171.
"United States Census, 1910," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M22G-WFL : accessed 20 February 2020), Orezome Pontbriand in household of Philomena Pontbriand, Spencer, Worcester, Massachusetts, United States; citing enumeration district (ED) ED 1819, sheet 6B, family 146, NARA microfilm publication T624 (Washington D.C.: National Archives and Records Administration, 1982), roll 630; FHL microfilm 1,374,643.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MFZ4-HBP : accessed 20 February 2020), Onesime P Pontbriand in household of Onesime J Pontbriand, Lewiston Ward 6, Androscoggin, Maine, United States; citing ED 31, sheet 1A, line 48, family 8, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 637; FHL microfilm 1,820,637.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:V111-1Z2 : 21 November 2019), Onesime Pontbriand in household of Peter Pontbriand, Ward 5, Lewiston, Lewiston City, Androscoggin, Maine, United States; citing enumeration district (ED) 1-48, sheet 14B, line 75, family 314, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 1470.