Kosmos was born about 1876. He passed away in 1952.
Sources
Death: "North Dakota, U.S., State Death Certificates, 1908-2007" North Dakota Department of Health; Bismark, North Dakota; North Dakota Death Records Ancestry Sharing Link - Ancestry Record 61747 #317222 (accessed 27 March 2022) Kosmas Heisler death 2 Jul 1952 (age 76) in Rugby, Pierce, North Dakota, USA.
Burial: Find a Grave, database and images (https://www.findagrave.com/memorial/24842151/kosmos-heisler : accessed 27 March 2022), memorial page for Kosmos Heisler (5 May 1876–2 Jul 1952), Find A Grave: Memorial #24842151, citing Little Flower Cemetery, Rugby, Pierce County, North Dakota, USA ; Maintained by John Wolfe (contributor 46967693) .
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DNA Connections
It may be possible to confirm family relationships with Kosmos 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 Kosmos: