| 1. de Ros, William II |
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1244 |
| P: |
Ingmanthorpe, Yorkshire, England |
| D: |
28 May 1310 |
| P: |
Yorkshire, England |
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| 2. de Ros, Sir William I |
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| B: |
1192 |
| P: |
Helmsley, Yorkshire, England |
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23 Dec 1264 |
| P: |
Yorkshire, England |
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| 3. FitzPiers, Lucy |
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| B: |
1207 |
| P: |
Forest of Dean, Gloucestershire, England |
| D: |
29 Sep 1266 |
| P: |
Yorkshire, England |
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| 6. FitzHerbert, Sir Piers |
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| B: |
1163 |
| P: |
Blaenllyfni Castle, Bwlch, Breconshire, Wales |
| M: |
28 Nov 1203 |
| P: |
Clavering, Essex, England |
| D: |
1 Jun 1235 |
| P: |
Reading, Berkshire, England |
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| 12. FitzHerbert, Herbert |
=> |
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| B: |
1129 |
| P: |
Brecon, Breconshire, Wales |
| M: |
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| P: |
Blaenllyfni Castle, Bwlch, Breconshire, Wales |
| D: |
18 Jul 1204 |
| P: |
Blaenllyfni Castle, Bwlch, Breconshire, Wales |
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| 7. FitzRobert, Alice |
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| B: |
12 Apr 1185 |
| P: |
Warkworth Castle, Warkworth, Northumberland, England |
| D: |
12 Apr 1225 |
| P: |
Blaenllyfni Castle, Bwlch, Breconshire, Wales |
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| 14. FitzRichard, Sir Robert |
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| B: |
1154 |
| P: |
Warkworth, Northumberland, England |
| M: |
1180 |
| P: |
Norwich, Norfolk, England |
| D: |
22 Nov 1214 |
| P: |
Warkworth Castle, Warkworth, Northumberland, England |
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| 15. de Chesney, Lady Margaret |
=> |
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| B: |
1165 |
| P: |
St Faith, Horsford, Norfolk, England |
| D: |
7 Jan 1231 |
| P: |
Warkworth Castle, Warkworth, Northumberland, England |
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1244 - 1310 (66 years)