John was born about 1742. He was the son of Isaac Osmun and Mary Bailey. He passed away after 1752.
Sources
In the notes for Isaac Osman -Find A Grave, database and images (https://www.findagrave.com : accessed 30 October 2018), memorial page for Pvt Isaac Osman (1738–1778), Find A Grave Memorial no. 72702650, citing Prison Ship Martyrs' Monument, Brooklyn, Kings County (Brooklyn), New York, USA ; Maintained by Theodore Spear (contributor 46963284) .
Death date is a sheer guess
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