↑ "California Death Index, 1940-1997," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VP9H-4PY : 26 November 2014), Jesse Cosma, 30 Apr 1990; Department of Public Health Services, Sacramento.
↑ "United States Social Security Death Index," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JBQ7-VZ4 : 20 May 2014), Jesse Cosma, 30 Apr 1990; citing U.S. Social Security Administration, Death Master File, database (Alexandria, Virginia: National Technical Information Service, ongoing).
↑ Source: #S33 Page: Marriage year as shown: 1893. TMPLT FIELD Name: Page VALUE Marriage year as shown: 1893.
↑ Source: #S74 Page: Marriage year as shown: 1895. TMPLT FIELD Name: Page VALUE Marriage year as shown: 1895.
"United States Census, 1920," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:MH3H-MXK : accessed 19 May 2020), Jess J Cosma in household of John J Cosma, Oakland, Alameda, California, United States; citing ED 116, sheet 13B, line 64, family 318, NARA microfilm publication T625 (Washington D.C.: National Archives and Records Administration, 1992), roll 90; FHL microfilm 1,820,090.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:XCXZ-5H5 : accessed 19 May 2020), Jessie Cosma in household of John Cosma, Oakland, Alameda, California, United States; citing enumeration district (ED) ED 177, sheet 26B, line 94, family 24, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 107; FHL microfilm 2,339,842.
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DNA Connections
It may be possible to confirm family relationships with Jesse J. by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share some percentage of DNA with Jesse J.: