On the same page 13 of the 1800 Census as Jethro Wood are James and John Wood. Looking through Storke's History of Cayuga County, we learn that John was probably Jethro's father. and James was a brother of John.
John and his family, and James as well as other Wood family members, came to Scipio from Washington County in 1799. John Wood served as State Senator, despite the restrictions of the Quaker Society in regard to holding office.
Googling Jethro Wood and his family turns up an amazing amount of information about the plow, Jethro's invention and antique farm implements.