The St. John Genealogy

Origin and Ancestry DNA Database & Electronic Archive


Birth Married


This Ancestry and DNA project was initiated by the descendants of Thomas St. John (1564-1625) of Uchel-olau, Glamorgan, Wales beginning in 2001. Thomas was the Master on the Popham Colony's ship, The Richard, that was taken captive by the Spanish off the coast of Florida. He bribed a guard for his freedom and returned to London a year later. His brother, Sir William St. John, Knight was a founder of the Jamestown Colony, 1st English Governor of the African Colony, and a Vice Admiral in the English Royal Navy. Two other brothers, Captain Nicholas St. John and Lt. Alexander St. John were killed at St. Lucia Island while trying to colonize it for England. These brothers were direct male descendants of Sir John St. John, Knight and 1st Baron St. John of Lageham, who descended from the first St. John, Ralph.

Big Y & 111 Y-STRs

Ralph, son of Wimund II, Seigneur de Haye-Pensel (Paynel) assumed the St. John surname by 1054. Ralph became the 'man' of St.John at the end of the sea near Mont St. Michel in Normandy, France but he is more prominently known as Ralph de Brehal and Ralph Paynel, the Domesday Tenant, [a merge with his son Ralph Paynel, Jr.]. Another son, Thomas of St. John, is remembered in the renaming of the village to St. Jean-le-Thomas. Ralph St. John-Paynel married the sister of Gilbert d'Lacy of Stantone in Domesday, Emma de Lacy.

Support the St. John DNA Project & Big Y Testing

St. John DNA Testing General Fund at FamilyTreeDNA: Donate Now.

Early St. John Family Tree

One of Ralph's younger sons, John St. John, I of Stanton-St. John married the daughter of Hugh Plugenet of Headington and founded the St. John family of Stanton-St. John, Lageham, Instow, Barton, Godstow, and Swallowfield in England. He is the ancestor of the St. Johns of Uchel-olau (High-light), Glamorgan, Wales, Weobley Castle in Swansea and the American Immigrants: (brothers) Mathias St. John (1601-1669), Thomas St. John (1613-1698), and Nicholas St. John (1617-1689) and their paternal uncle, Mathew St. John (1590-1671).

Family Reunion Planning

Tentative: Jul 1 - Jul 3, 2022 in Post Falls, Idaho 83854

The St. John Genealogy Origin and Ancestry

Video Credits

Music:"The Vikings are Coming!" by Scott Holmes
Free Music Archive - Scott Holmes
Facebook - Scott Holmes


There are many false claims regarding persons of the St. John surname. Historians have confounded specific individuals with others. Articles and books often describe confusing and conflicting claims. Unsubstantiated theories have been added to research sites as legitimate records. This site attempts to fix these issues with primary records and DNA testing by identifying as many living descendants and their direct lineages as possible.
Check Out - Debunked Claims

Genetic Genealogy

We have two DNA projects at FTDNA
1) The St. John DNA project:
2) The Glamorgan Wales DNA project:
We can also review your AncestryDNA results if you share them with member 'thepoetz'
We are currently seeking any St. John males to test for our Y-DNA study of the various paternal lines. Other tests for female St. Johns are also proving helpful such as mtDNA and autosomal DNA for both male and female descendants.

Heraldry Genealogy

According to the College of Arms, any person who descends from a legitimate male descendant of Sir John St. John, 1st Baron St. John of Lageham inherit the right to his arms.

Secondary St. John Surnames

Several secondary St. John surnames have been created through the years including: St. John-Paynel, de Port-St. John, Mewes-St. John, Poynings-St. John, Mildmay-St. John, and possibly others. While this project's main goal focuses on the original St. John lineage, it does include those other paternal families that share the St. John surname.

The St. John Genealogy Newsletter Est. 2018

Naming Conventions

  • All phonetic variations of confirmed St. John are in this database as St. John.
  • All phonetic variations of confirmed de Port are in this database as de Port-St. John.
  • Known Phonetic Spellings of St. John click here.

Contact Us

email imageIf you have any questions or comments about the information on this site, please contact us. We look forward to hearing from you.

 switch to mobile display 

This site powered by The Next Generation of Genealogy Sitebuilding v. 13.0.3, written by Darrin Lythgoe © 2001-2021.

The St. John Genealogy - created and maintained by The St. John Genealogy Copyright © -2021 All rights reserved. | Data Protection Policy.

This site is for the preservation of the St. John families. Material on this site is intended to educate those interested in St. John Family History.

Connexions : 569