Jacob was born in 1779. He was the son of Jacob Markley and Mary Koplin. He passed away in 1874.
Sources
Mentioned in mother's will.
Find a Grave, database and images (https://www.findagrave.com/memorial/76072952/jacob-k-markley : accessed 23 October 2021), memorial page for Jacob K. Markley (25 Jan 1779–24 Mar 1874), Find a Grave Memorial ID 76072952, citing Upper Skippack Mennonite Church Cemetery, Evansburg, Montgomery County, Pennsylvania, USA ; Maintained by Tom Myers (contributor 47272121) .
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DNA Connections
It may be possible to confirm family relationships with Jacob by comparing test results with other carriers of his ancestors' Y-chromosome or mitochondrial DNA.
However, there are no known yDNA test-takers in his direct paternal line.
Mitochondrial DNA test-takers in the direct maternal line: