William (Sir)(of Sprotborough&Emley) Fitzwillian
- Bef 1342
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 | Joan Fitzwilliam -Yes, date unknown |
| Joan Fitzwilliam | |
| D: | Yes, date unknown |
| Thomas (Sir) De Stapleton -Yes, date unknown |
| Thomas (Sir) De Stapleton | |
| D: | Yes, date unknown |
| William (Sir) (of Sprotborough) Fitzwilliam -Yes, date unknown |
| William (Sir) (of Sprotborough) Fitzwilliam | |
| D: | Yes, date unknown |
| Maud De Cromwell -Yes, date unknown |
| Maud De Cromwell | |
| D: | Yes, date unknown |
| Edmund Fitzwilliam -Yes, date unknown |
| Edmund Fitzwilliam | |
| D: | Yes, date unknown |
| Sir John (of Sprotborough) Fitzwilliam 1327-1385 |
| Sir John (of Sprotborough) Fitzwilliam | |
| B: | 1327 |
| D: | 1385 |
| Elizabeth (of Huntingdon) De Clinton -Yes, date unknown |
| Elizabeth (of Huntingdon) De Clinton | |
| D: | Yes, date unknown |
| John (Sir) (of Sprotborough & Emley) Fitzwilliam | |
| D: | 10 Aug 1349 |
| Joan De Reresby -Yes, date unknown |
| Joan De Reresby | |
| D: | Yes, date unknown |
|
| William (Sir)(of Sprotborough&Emley) Fitzwillian | |
| D: | Bef 1342 |
| Maud -Bef 1324 |
| Maud | |
| D: | Bef 1324 |
| Isabel Deincourt -1348 |
| Isabel Deincourt | |
| D: | 1348 |
| Dsp | |