The following deed is found in the book New Castle County Delaware land Records 1762-1765, compiled by Carol Garrett:
12 Jan 1763, John Houton of Bucks Co, In province of Pennsylvania, and
Elizabeth his wife Joseph Houton of Hunterdon Co, in Province of West New Jersy
and Mary his wife, and Alice Hixson of sd Hunterdon, widow, for the sum of 90
pounds, sold unto Derrick Williams of Appoquinimink Hun. In Co of New Castle
on Delaware, yeoman, a tract of land situate in Appoquinimink Hun. Containing
207 acres. It bounds lands of John Weldon, Thomas Rothwell sen., Cornelius King,
and Jacob Weldon. This land that William Gozord by virtue of a Land Warrant dated
16 Jan 1739, surveyed by Thomas Noxon, became seized of. And hereas sd Gozord
by his deed dated 14 Feb 1746, did sell and convey sd. Land unto Richard Houton.
Ack. May term 1763. Rec. 27 Oct 1763
This is the land surveyed by William Gossett in 1739/40 and called “Brothers Portion,” the land of William and Jacob Gossett and was sold in 1746/7. This may mark the removal of the Gossetts from Delaware. However, a deed recorded on 15 May 1759 seems to indicate that William may have stayed in Delaware. It’s from the same book referenced above by Carol Garrett. In the deed, William Gossett, Edward Fitzrandolph, James Ball, and Sampson Atkinson are all listed as having land bounding the land being sold.
This could be the William listed in the 1729 will, the 1739/40 land survey, and the 1746/7 land sale. However, it could be a son of John Gossett, brother of James and William Gossett who was left the “last land taken up,” in the will. He certainly would have had children old enough to own land by 1759.