William was born about 1878. He passed away about 1945.
Sources
"Ireland Births and Baptisms, 1620-1881," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:FGGB-R9R : 10 February 2018), William John Patterson, 03 Oct 1878; citing Derry, Londonderry, Ireland, index based upon data collected by the Genealogical Society of Utah, Salt Lake City; FHL microfilm 256,015.
"New York, New York City Municipal Deaths, 1795-1949," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:2WYS-74N : 10 February 2018), Mary Mccready in entry for William Patterson, 04 Dec 1945; citing Death, Manhattan, New York, New York, United States, New York Municipal Archives, New York; FHL microfilm 2,132,814.
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DNA Connections
It may be possible to confirm family relationships with William by comparing test results with other carriers of his Y-chromosome or his mother's 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 William: