The St. John Genealogy Project
Origin and Ancestry DNA Database & Electronic Archive
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 MaleGiles de Port-St. John, Lord of Plumpton; m. Margery de Lyon |
| Birth | abt. Apr 1330 | Hambleton, Rutland, England, UK  |
| Death | aft. 1391 | Hambleton, Rutland, England, UK |
| Burial | ||
| Marriage | bef. 11 May 1371 | |
| Father | William de Port-St. John, of Easton Neston (near Paulsbury)Hameldon, Rutland, Northamptonshire, England | F3456 Group Sheet | |
| Mother | Isabella Cobmartin, St. John; de Rothing | F3456 Group Sheet | |
 FemaleMargery de Lyons, m. Giles de Port-St. John |
| Birth | ||
| Death | ||
| Burial | ||
| Father | John de Lyons | F5795 Group Sheet | |
| Mother | Margaret de Oakley, of Great Oakley, Northamptonshire, England | F5795 Group Sheet | |
| Female Margaret de Port-St. John, Harrowden |
| Birth | bef. 11 May 1371 | Moreton Pinkney, Northampton, England, UK |
| Death | 1 Aug 1441 | Moreton Pinkney, Northamptonshire, England, UK |
| Burial | ||
| Spouse | William Harrowden | F398974 | |
| Marriage | Bef. 11 May 1401 | Moreton Pinkney, Northamptonshire, England, UK |
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