Ancient Record Book B, Oyster Bay, (Colony of New York, British Colonial America):
"Gideon Harrison ye sone of...Isaiah Harrison [& 1st wife Elizabeth WRIGHT, daughter of Gideon Wright] was Born at Oysterbay ye 25 day of June AD 1694"

DEED SUSSEX COUNTY, DELAWARE
A264▪︎Feb 1722/23 John Fisher & wife Elizabeth [Elizabeth Fisher released her DOWER rights] to Gideon Harrison 75 acres on Branch of Broad Creek part of 1000 acres....from Thomas Bedwell & Honour, his wife, executnix of Will of Wm. Clark, late of Lewes Town, Sussex Co., gentlemen, dec'd.
F6-049▪︎5 Feb 1722/23 John Fisher, yeoman of Sussex to Gideon Harrison, yeoman of same for 30 pounds, 75 acres on a branch Broad Creek bounded by Kings Rd. at Round Pole Branch...
▪︎FROM ANOTHER RESEARCHER: note abt. Gideon's land in Sussex Co., [then Colony of Pennsylvania, British Colonial America; now Delaware, USA] Robert Patterson's 106 acre tract was located 1 mile west of Gideon, with a small road running directly between the 2 tracts (Sand Hill Rd, which runs from Gravel Hill Rd. to Harbeson Rd). & bounding on the North side of Patterson's tract was Robert Cravens Sr., who md. Mary Harrison, Gideon's sister.

Court of Sussex, Delaware [Pennsylvania Colony]
188▪︎ Aug 1728: Grand Jury...John Harrison, Gideon Harrison...
192▪︎Aug 1728: John Price vs. Gideon Harrison, Cont. to this term...
197▪︎Aug 1728: Wm. Till, Esquire vs Gideon Harrison
199▪︎Aug 1728: Grand Jury...John Harrison, Gideon Harrison
201▪︎Nov 1728: John Price et uon vs Gideon Harrison; cont.
209▪︎Feb 1728/29: Grand Jury...John Harrison, Gideon Harrison
211▪︎Feb 1728/29John Price et uon vs Gideon Harrison
242▪︎5 Aug 1729: Wm. Till, Esq. vs. Adm. of Gideon Harrison
258▪︎4 Nov 1729: Wm. Til, Esq. vs. Gideon Harrison, Adms.
269▪︎3 Feb 1729/30: William Till, Esqr. vs. Gideon Harrison

This Gideon Harrison died after he served on the Grand Jury in Feb 1729 [modern calendar], but before 13 June 1729, as shown by Probate Records: Administration of Estate of Gideon Harrison; ▪︎V. L. Skinner, Abstracts of the Proceedings of the Orphans Court of Sussex County Delaware, Libers 1, 2, 3, 4, A, 1708-1777, (2005), p5▪︎"13June 1729. Widow Hannah ____? CH unnamed. His widow & administratrix 'Hannah' submitted the inventory of Gideon's estate to the Sussex County Orphan's Court. 1/3 was distributed to the widow & the other 2/3's to the 'CH unnamed.'▪︎See above reference; Liber 1, p5. (NOTE: 1st records of Court in Dover)"
Sussex Co., Delaware; Will Book #1, p 10▪︎13June 1729 "Hannah Harrison widow & administratrix of Gideon Harrison Inventory is £87.50 Accounts are £72.4.6 Distribution widow 1/3 heirs: unnamed."

F6-368▪︎8 May 1730 Ryves Holt, Sheriff Sussex to Daniel Harrison for £20, 75 acres on lower side Kings Rd. at Round Pole Branch, Land belonging to Gideon Harrison who was indebted to Wm. Till of Loan Office who brought suit 4 Nov 1729. Land sold at Public Auction to (highest bidder) Daniel Harrison....

G7-215▪︎12 April 1737; Daniel Harrison, yeoman of Sussex to Henry Scidmore, yeoman of same for £30, 75 acres on a branch of Broad Creek bounded by lower side of Kings Rd. at Round Pole Branch...part of a Tract of 1000 acres...Land bought 5 May 1730 as a result of nonpayment of debt by Gideon Harrison. Signed: Daniel Harrison. "

SETTLERS BY THE LONG GREY TRAIL, by J. Houston Harrison:
FOREWORD, page v: ▪︎"There was perhaps no family more intimately associated with the early history of Rockingham County, Virginia, than the Harrisons & their connections. The county seat itself was named for one of them. Much that has been written regarding them has been found to be erroneous, & it has been necessary to refer continually to original sources, many of which are cited...in full."
page 189:▪︎"GIDEON HARRISON, son of Isaiah Harrison & wife Elizabeth, born at Oyster Bay Town, Long Island, New York, 25 June 1694, died in Sussex County, Delaware, 1729. Following his father's removal to Sussex in 1721, Gideon bought 75 acres of land on 'broad creek' (the Broadkill) 'on the lower side of Kings Road' of John Fisher & his wife Elizabeth, Feb 5, 1722. This land was near his brother John's & sold to their 1/2 brother, Daniel, May 8, 1730. The [page 190] later in turn sold it, April 12, 1737, to Henry Scidmore. Gideon was married & his wife served as Administratrix."
■ "A Gideon Harrison, probably his son, died in Old Augusta County, Virginia, in 1761. On May 20, [1761], Benjamin Harrison (son of Daniel) qualified as his Administrator (Order Book III, p15). The appraisment of his estate by Daniel Love, Saml. Hemphill, & William Gragg was recorded Nov 17, 1761 (Will Book III, p93) His sale bill of Nov 10th indicates he was a young unmarried man & includes only..."
"Mary Harrison to 16 yards stripes & Stuffa
Benjamin Harrison to 1 Green Jaccoat
Benjamin Harrison to 1 coat & Jaccoat
Benjamin Harrison to Jaccoat & Cravat
Benjamin Harrison to 1 pair Britches
Benjamin Harrison to 1 Coat Bridle
Benjamin Harrison to 3 shirts
Benjamin Harrison to 1 Grey Horse
Patrick Guin (Quinn) to 2 deer skins
William Cravens to 2 deer skins
Daniel Smith to 2 deer skins
John Faris to Cash for sale
Total £16-19-00"
▪︎"According to a suit at law brought by Mathias Lair & Catherine, 28 May, 1765, a John Harrison & Mary (his wife) had 'left the Colony' just prior to this time (County Court Judgments Aug 1756; chalkley, Vol. I, p334) This John may have been also a son of Gideon, Sr. He does not appear to be a landowner."

From another researcher, I saw research that Gideon & his wife, Hannah Harrison had a son named Joseph Harrison. Also, that the widow, Hannah Harrison & her children left for the Shenandoah Valley of Virginia with Isaiah Harrison, Sr. & other members of his family who left with him in 1737.

It is known from Court Records, that this Gideon Harrison died in 1729, & I have placed him in the Lewes Presbyterian Church Cemetery, where there are Find A Grave Memorials for some early Stewarts/Stuarts. But Gideon Harrison may not be buried here.

From the website, Genealogy Trails for Sussex County, Delaware: About 1694, the Court ordered a tract of land near Block House Pond be used for burials. Here, in 1727, a Friends' Burial Ground was established with Mary Miers setting aside 1 acre of ground. Some interments were made, but, after the custom of Friends, also known as Quakers, no headstones marked the graves. In 1813 Jane Cord... conveyed the above tract...to the Camden Monthly Meeting for a burial ground.... Many Quakers left of area, & in 1840, most of the ground was sold to William Russell & was used for other purposes.