John Gynn of Anstey married Mary Gill on 4 Nov 1661/2.
John and Mary Gynn are the parents of Thomas Ginn who married Lydia Mace in 1709. I wonder if Tom knew what we know today about his ancestry.
Mary Gill was the daughter of Edward Gill (Gyll) of Anstey and Ann Swann (b 1610?, see note). They were married at Barkway on 25 Oct 1638. Ann was the daughter of Robert Swann and Ann Crouch of Newton, Cambridgeshire. She died in childbirth of Mary in 1641. Mary had an older sister, Ann, who was born in 1639.
Edward was the son of Edward Gylle (Gill) of Bandon's and Anstey (bur 29.10.1642; Will proved 1643) who married Mary Mitchell (b c1585, bur 30.11.1675, daughter of Edward Mitchell (of Standon), widow of Richard Smartfoote of Puckeridge).
Edward was the son of Edward Gylle or Gill of Bandon's and Anstey & Little Court in Laystone (bur 11.05.1616) and Margaret Campion (first marriage, 10 May 1574; bur 16.02.1605). Margaret was daughter of Thomas Campion of Essex, widow of Henry Brograve of Buntingford.
Edward was the son of George Gylle of Wydial (b c1510, d 29.10.1568) and Gertrude (or Anne) Peryent (first marriage, 1537; d c1547). Gertrude was the daughter and coheir of Sir John Peryent of Digswell by Dorothy, dau/coheir of William Tendering of Little Birch.
John was the son of Thomas or Edmund Peryent or Perient of Digswell (d 1474) and Mary Brockett of Whethamsted. Thomas was the son of John Peryent of Digswell (d 1432) who was the son of John Peryent of Digswell, Hertfordshire (d 1415) who was the son of (Sir) John Peryent, "born in Gascoigne, came into England" with Edward, the Black Prince.
So, (Sir) John Peryent (b 1350) would be our great-grandfather, the 18th generation back from me but is on the maternal side of the Ginn-Gill marriage.
Going further back on the Gill line from the marriage of George to Gertrude:
Gill is a well known and ancient family and can be traced back to the 13th century, at least.
"The name of Gyll or Gill is of very ancient record in the local annals of England, and signifies, Valley. A family of this name lived in Cumberland prior to the Norman conquest, and had possession of those lands known by the name of Gillesland, which were seized by the rapacious followers of William the Conqueror ... Early English deeds in possession of the writer, some in Latin and some in English, show that in 1530 a John Gyll was resident in Hertfordshire.".
Source: https://www.ahopkinsfamily.org/gill-genealogy.htm
"The Family of Gyll, or Gill, for in both these ways it is found recorded in ancient evidences of undoubted authenticity, is derived from an ancient stock long settled at Buckland, Co. Herts, where they are repeatedly described both by Chauncy and Clutterbuck at the beginning of the reign of Richard III. ; but, on the authority of Dugdale and of the Hundred Rolls, it is stated, that in temp. King Edward I. some of the same family had holden lands in Co. Cambridge, that Richard Gylte was living at Shelford in 1272 (1 Edw. I., AD 1272), and Walter and Bateman Gylle at Foxton, near Royston, in 1272 and 1278, probably a branch of Gille of Gillesland, Co. Cumberland. Another branch of this family held the Patent-office of Lion-Keeper in the Tower 1 13 years." — [See Collect. Top. and Gen. vol. viii.]
Source: The History and Antiquities of the County of Buckingham, Volume 4 by George Lipscomb
J. & W. Robins, 1847 - Buckinghamshire; http://books.google.ca/books/about/The_history_and_antiquities_of_the_count.html?id=mXkgAQAAMAAJ
George Gylle of Wydial (b c1510, d 29.10.1568) who married Gertrude (or Anne) Peryent was the son of John Gylle of Wydial, Hertfordshire (d 15.03.1545/6)
John was the son of William Gylle of Buckland (alive 1499)
William was the son of John Gylle of Buckland in Tharfield, Hertfordshire (d 23.01.1499)
John was the son of Richard Gylle of Cambridgeshire & Buckland (Hertfordshire)
Richard was the son of (??) Gylle who was the son of Richard Gylle (alive 1308) who was the son (Richard?) Gylle of Shelford Parva (alive 1278).
Looking further at the ancient origin of the Gill family:
With reference to the 'Gille of Gillesland, Co. Cumberland' mentioned above, it is possible the ancient lineage of 'Gill' may be related to 'Vaux of Normandy'. This is not a certainty because there's a gap in the lineage, so there's no confirmed connection between these families:
"Gylle or Gille of the Barony of Gille's Land Cumberland before the Conquest. Bueth Gille a Saxon Lord of Gilles Land & of Denton Cumberland. His son Robert assumed the name of Vallis or de Vaux which is the synonyme for Gylle which means valley." This implies that the family of Vaux of Gilsland may have been the senior line of this family. That contradicts what is suggested on Vaux1".
Read more about Mary Gill's Gill ancestors and Perient ancestors.
sources: gyll1_at_stirnet.htm; gyll3_at_stirnet.htm; vaux1_at_stirnet.htm