Jonathan was born in 1747. He passed away in 1823.
Sources
Grave marker. Find A Grave, database and images (https://www.findagrave.com : accessed 12 June 2018), memorial page for Jonathan Ingersoll (1748–12 Jan 1823), Find A Grave: Memorial #131084925, citing Grove Street Cemetery, New Haven, New Haven County, Connecticut, USA
"Jonathan Ingersoll: Overcoming a Handicap 200 Centuries Ago", from "Old Ridgefield, profiles of notable Ridgefield, Connecticut...", http://www.naturegeezer.com/2018/08/p_4.html
Dexter, Franklin Bowditch. [Biographical Sketches of the Graduates of Yale College|Biographical Sketches of the Graduates of Yale College]] (Yale University Press, New Haven, Conn., 1903) Vol. 3, Page 187.
Obituary for Jonathan Ingersoll. Repertory, Boston, Massachusetts, 16 Jan 1823, pg 2.
grad. Yale 1766 LL. D., Judge of Sup. Court, and Lieut. Gov. Conn.
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DNA Connections
It may be possible to confirm family relationships with Jonathan 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 Jonathan: