The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
 MaleThomas de Berkeley, 3rd Baron Berkeley, m. Margaret Mortimer |
| Birth | 1293-1294 | Berkeley Castle, Gloucestershire, England, UK  |
| Death | 1361 | Berkeley Castle, Gloucestershire, England, UK |
| Burial | ||
| Marriage | ||
| Father | Maurice de Berkeley, "The Magnanimous", 2nd Baron Berkeley | F399054 Group Sheet | |
| Mother | Eva La Zouche | F399054 Group Sheet | |
 FemaleMargaret de Mortimer, de Berkeley |
| Birth | 1308 | Ludlow, Wigmore, Herefordshire, England, UK |
| Death | 5 May 1337 | Berkeley Castle, Gloucestershire, England, UK |
| Burial | ||
| Father | Roger Mortimer, 1st Earl of March; m. Joan Greneville | F899 Group Sheet | |
| Mother | Joan Geneville | F899 Group Sheet | |
| Male + Maurice de Berkeley, "the Valiant", 4th Baron Berkeley |
| Birth | 1330 | Berkeley Castle, Gloucestershire, England, UK |
| Death | 3 Jun 1368 | Berkeley Castle, Gloucestershire, England, UK |
| Burial | ||
| Spouse | Elizabeth Despenser, m. Maurice de Berkeley | F399052 | |
| Marriage | ||
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