Source Information

Ancestry.com. The Underhill Burying Ground [database on-line]. Provo, UT: Ancestry.com Operations Inc, 2005.
Original data: Underhill, David Harris,. The Underhill Burying Ground : an account of a parcel of land situate at Locust Valley, Long Island, New York, deeded by the Matinecock Indians, February twentieth, sixteen hundred and sixty seven, to Captain John Underhill for meritorious service and known as the Underhill Burying Ground. New York: Printed by the Hine Pub. Co., 1826 i.e. 1926.