William died either the day he was born, or the following day.
Sources
"Ohio, County Births, 1841-2003," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:VR9F-YPX : accessed 1 April 2016), William Kaufman, 10 Dec 1884; citing Birth, Ottawa Township, Putnam, Ohio, reference p. 114, # 546, county courthouses, Ohio; FHL microfilm 915,767.
"Ohio, County Death Records, 1840-2001," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:F6FS-TXQ : accessed 1 April 2016), William Kaufman, 10 Dec 1884; citing Death, Ottawa, Ottawa, Ohio, United States, source ID v 2 p 122, County courthouses, Ohio; FHL microfilm 915,770.
"Find a Grave, database and images (https://www.findagrave.com/memorial/76642701/wilhelm-kaufmann: accessed 25 November 2023), memorial page for Wilhelm Kaufmann (10 Dec 1884–12 Dec 1884), Find a Grave Memorial ID 76642701, citing Holy Family Cemetery, New Cleveland, Putnam County, Ohio, USA; Maintained by OhioSearcher (contributor 47352802).
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DNA Connections
It may be possible to confirm family relationships with Wilhelm 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 Wilhelm: