Paternal and maternal relationships are confirmed by an AncestryDNA test match between Catherine's son Michael Murtaugh and the private daughter of Catherine's brother Joseph O'Herron. Their MRCAs are their grandparents, Joseph O'Herron and Bridget McHugh. They share 825 cM across 28 segments. 1st cousin probability: 97%.
"Illinois, Cook County, Birth Certificates, 1871-1940," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:N7QQ-486 : 18 May 2016), Catherine Bridet Oherrore, 16 Apr 1919; Franklin Park, Cook, Illinois, United States, reference/certificate 6, Cook County Clerk, Cook County Courthouse, Chicago; FHL microfilm 1,308,569.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MJWC-2PF : accessed 10 November 2015), Catherine B Oheron in household of Joseph E Oheron, Leyden, Cook, Illinois, United States; citing sheet 4B, family 74, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, n.d.); FHL microfilm 1,820,360.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/XSG8-1VX : accessed 23 September 2015), Catherine Oherron in household of Joseph E Oherron, Chicago (Districts 0751-1000), Cook, Illinois, United States; citing enumeration district (ED) 0898, sheet 14B, family 247, line 63, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 455; FHL microfilm 2,340,190.
"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/KWBT-T3B : accessed 23 September 2015), Catherine O'Herron in household of Joseph O'Herron, Ward 25, Chicago, Chicago City, Cook, Illinois, United States; citing enumeration district (ED) 103-1585, sheet 11B, family 205, NARA digital publication T627 (Washington, D.C.: National Archives and Records Administration, 2012), roll 971.
"United States Social Security Death Index," database, FamilySearch (https://familysearch.org/pal:/MM9.1.1/JRKV-WP8 : accessed 17 March 2016), Catherine D Murtaugh, 15 Nov 2001; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
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DNA Connections
It may be possible to confirm family relationships with Catherine by comparing test results with other carriers of her mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share some percentage of DNA with Catherine: