| 1. Sibyl Demontagu |
 |
| B: |
1330 |
| P: |
, Somerset, England, United Kingdom |
| D: |
30 Jan 1344 |
| P: |
, Somerset, England, United Kingdom |
|
| 2. William Demontagu |
|
| B: |
1303 |
| P: |
Cassington, Oxfordshire, England, United Kingdom |
| M: |
1327 |
| P: |
Cassington, Oxfordshire, England, United Kingdom |
| D: |
30 Jan 1344 |
| P: |
Windsor Castle, Windsor, Berkshire, England, United Kingdom |
|
| 4. |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
| 8. |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
| 9. |
|
| |
|
| |
|
| |
|
| |
|
|
| 5. |
|
| |
|
| |
|
| |
|
| |
|
|
| 10. |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
|
| 11. |
|
| |
|
| |
|
| |
|
| |
|
|
|
|
| 6. Baron of Grandison William De Grandison |
|
| B: |
Abt 1255-1264 |
| P: |
Cassington, Oxfordshire, England, United Kingdom |
| M: |
Abt 1286 |
| P: |
Donyatt, Somerset, England, United Kingdom |
| D: |
27 Jun 1335 |
| P: |
Cassington, Oxfordshire, England, United Kingdom |
|
|
|
|
| 7. Sybil Tregoz |
|
| B: |
1271 |
| P: |
Ewyas Harold, Herefordshire, England, United Kingdom |
| D: |
12 Oct 1334 |
| P: |
|
|
| 14. Lord John De Tregoz |
=> |
|
| B: |
Abt 1222 |
| P: |
Ewyas Harold, Herefordshire, England, United Kingdom |
| M: |
1248 |
| P: |
Ewyas Harold, Herefordshire, England, United Kingdom |
| D: |
21 Aug 1300 |
| P: |
|
|
| 15. Mabel Fitz Warin |
=> |
|
| B: |
Abt 1230 |
| P: |
Whittington, Shropshire, England, United Kingdom |
| D: |
Bef 24 May 1297 |
| P: |
|
|
1330 - 1344 (14 years)