MaleJohn Fitzwilliam |
| Birth | 1295 | Spotbrough, Yorkshire, England, United Kingdom |
| Death | 1349 | Emley, Yorkshire, England |
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FemaleIsabel Deincourt |
| Birth | 1268 | Blankney, Lincolnshire, England |
| Death | 1348 | Emley, Yorkshire, England |
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| Father | Sir, Edmund Deincourt, ,1st Baron Deincourt | F14068 Group Sheet | |
| Mother | Isabel De Mohun | F14068 Group Sheet | |