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In memory of Israel Underhill, my Maternal 6th Great-Grandfather on the DECKER branch.


  • Underhill Genealogy Vol. 5, p. 115-116.
  • Underhill Genealogy Vol. II, p. 191.
  • The American Genealogist, Vol. 23, p. 121.
  • 1790 Census Yorktown (Cortland Manor), Westchester, New York.
  • 1800 Hurley, Ulster, New York.
  • 1810 Census Newburgh, Orange, New York.


8 Branches of my tree framed.jpg



Genealogy is my hobby and the information provided here is a work in progress. I have loads of information to add and new finds are continually being discovered. If you have any corrections, additions, or comments to contribute, please use the comment box below. Visit the Latest Updates page to see when this Ancestor Profile page is updated. 

Israel Underhill

Ensign 3rd Reg. NY Militia

Maps & Research Links:



1755 (or earlier)

Westchester, New York


1777 Aug 6

Westbury, Nassau, New York



1811 (est)

Newburgh, Orange, New York


[ View memorial on Findagrave ]



Israel Underhill was born before 1755 in Westchester County, New York and died abt. 1811 in Newburgh, Orange County, New York. He married Elizabeth "Betsy" Garrison. He served as Ensign in the 3rd Reg. of New York Militia and was counted on the census in Yorktown, New York, (formerly called Cortlandt Manor) in 1790. In 1800, he was living in Hurley, Ulster County, New York, and in 1810, he was in Newburgh, Orange County, New York. He died before 1820.


Israel Underhill & Elizabeth Garrison were the parents of my ancestor,

  • John Underhill, b. abt. 1780, d. 1851, married Sarah Barnhart.
  • Elizabeth Underhill, b. 1780, d. 1861, married Leonard Cole.
  • Garrison Underhill, b. abt. 1784, married Zillah Underhill.
  • Israel Underhill, b. abt. 1787.
  • Bartow Underhill, b. abt. 1790.
  • Robert R. Underhill, b. abt. 1793, married Ann Bloomer.
Records, photos, and memorabilia pertaining to the life of Israel Underhill:

DNA Notes:

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