The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
1247 - 1274 (28 years) 
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| Name | Thomas St. John | |
| Suffix | Knight, Alleged | |
| Birth | abt. 1247 | Instow, Devon, England, UK  |
| Gender | Male | |
| Generation | 08 | |
| Death | aft. 1274 | Ashewell, Devon, England |
| Person ID | I11743 | St. John Origin and Ancestry DNA Database |
| Last Modified | 31 Aug 2024 | |
| Father | Sir John II St. John, knight, m. Petronilla de Clare, of Instow, b. 1222-1228, Stanton-St. John, Oxfordshire, England, UK d. Living in 1303, Instow, Devon, England, UK (Age 75 years) | |
| Relationship | Birth | |
| Mother | Petronilla de Clare, St. John, of Instow, Devon, England (alleged wife), b. abt. 1229, Tewkesbury, Gloucestershire, England, UK d. 1320, Devon, England, UK (Age 91 years) | |
| Relationship | Birth | |
| Marriage | abt. 1242 | Devon, England, UK |
| Family ID | F905 | Group Sheet | Family Chart |
| Parliamentary Military Writs |  | Media (Log in) |
| Notes |  Notes (Log in) |
| Reference | Suzanne St. John. "Thomas St. John, Knight, Alleged". The St. John Genealogy Project. https://stjohngenealogy.com/getperson.php?personID=I11743&tree=OSA0001 (accessed April 24, 2025). |
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