Jethro was born in 1781. He passed away in 1874. [1]
Sources
↑ Find a Grave, database and images (https://www.findagrave.com/memorial/13617397/jethro-coffin: accessed 9 April 2023), memorial page for Jethro Coffin (22 Sep 1781–3 Feb 1874), Find A Grave: Memorial #13617397, citing Rural Cemetery, New Bedford, Bristol County, Massachusetts, USA; Maintained by Preservationist (contributor 46830724).
Barney Genealogical Record. Nantucket Historical Association. Person ID I2875.
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DNA Connections
It may be possible to confirm family relationships with Jethro by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree:
G C :
Family Tree DNA Y-DNA Test 111 markers, haplogroup R-BY34208, FTDNA kit #266234
Chip Coffin :
Family Tree DNA Y-DNA Test 700 markers, haplogroup R-BY60137, Ancestry member Chip_Coffin, FTDNA kit #954106