"New York, New York City Marriage Records, 1829-1940," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:244N-K33 : 10 February 2018), Alfred Berard and Catherine O'Hallorau, 07 Oct 1913; citing Marriage, Brooklyn, Kings, New York, United States, New York City Municipal Archives, New York; FHL microfilm 1,613,583.
"United States Census, 1900," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MSNH-FWZ : accessed 19 July 2020), Kitty O'Halloran in household of Michel O'Halloran, Borough of Brooklyn, Election District 30 New York City Ward 22, Kings, New York, United States; citing enumeration district (ED) 380, sheet 10A, family 160, NARA microfilm publication T623 (Washington, D.C.: National Archives and Records Administration, 1972.); FHL microfilm 1,241,060.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MJ5Y-6M5 : accessed 19 July 2020), Catherine Berard in household of Michael O'Halloran, Brooklyn Assembly District 12, Kings, New York, United States; citing ED 690, sheet 10A, line 8, family 187, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 1162; FHL microfilm 1,821,162.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X4VK-B2D : accessed 19 July 2020), Katherine Stanton in household of Edward Stanton, Brooklyn (Districts 0751-1000), Kings, New York, United States; citing enumeration district (ED) ED 837, sheet 10B, line 85, family 239, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1536; FHL microfilm 2,341,271.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K31F-CQT : 31 May 2020), Catherine Stanton in household of Edward C Stanton, Islip Town, Suffolk, New York, United States; citing enumeration district (ED) 52-130, sheet 13B, line 66, family 291, 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 2787.
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