![John (De Grey) Marmion, [Baron Marmion]](img/male.jpg)
| Name | John (De Grey) Marmion | |
| Suffix | [Baron Marmion] | |
| Birth | 1343 | Of, ROTHERFIELD, Oxfordshire, England |
| Christening | (16-1359) |
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| Gender | Male | |
| _UID | 669C6C671164CF4C9ACA3AEBB66BAF571598 | |
| Death | 25 Oct 1368 | , , , Spain |
| Person ID | I20888 | Ken Tree |
| Last Modified | 3 Nov 2019 | |
| Father | John De Grey, [Baron Grey], b. 29 Oct 1300, , ROTHERFIELD, Sussex, England d. 1 Sep 1359, , ROTHERFIELD, Sussex, England (Age 58 years) | |
| Mother | Avice Marmion, b. Abt 1309, Of, Tanfield, Yorkshire, England d. Aft 20 Mar 1378 (Age > 69 years) | |
| Marriage | Abt 1342 | |
| _UID | 69B2CC2CDC910B47A569B3E00994C4EDC1C8 | |
| Family ID | F11351 | Group Sheet | Family Chart |
| Family | Elizabeth St Quintin | |
| Marriage | Abt 1364 | |
| _UID | FD38A485748BBE42A0A77743C51468F796B9 | |
| Family ID | F10050 | Group Sheet | Family Chart |
| Last Modified | 1 Apr 2026 | |
| Notes |
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