| 1. de Lewknor, Thomas |
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| B: |
Between 1270 and 1271 |
| P: |
South Mimms, Middlesex, England |
| D: |
22 Mar 1336 |
| P: |
Broadhurst Manor, Sussex, England |
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| 2. de Lewknor, Sir Roger |
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| B: |
Between 1244 and 1246 |
| P: |
South Mimms, Middlesex, England |
| M: |
1271 |
| P: |
Horsted Keynes, Sussex, England |
| D: |
24 Sep 1295 |
| P: |
South Mimms, Middlesex, England |
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| 3. de Keynes, Joan |
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| B: |
1259 |
| P: |
Horsted Keynes, Sussex, England |
| D: |
DECEASED |
| P: |
England |
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| 6. de Keynes, Richard |
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| B: |
1228 |
| P: |
Horsted Keynes, Sussex, England |
| M: |
1259 |
| P: |
England |
| D: |
1295 |
| P: |
Horsted Keynes, Sussex, England |
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| 12. de Keynes, Lord Richard |
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| B: |
1200 |
| P: |
Horsted Keynes, Sussex, England |
| M: |
Between 1221 and 1223 |
| P: |
England |
| D: |
1241 |
| P: |
Horsted Keynes, Sussex, England |
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| 14. de Mankesey, Robert |
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| B: |
1201 |
| P: |
Catteshall, Surrey, England |
| M: |
1228 |
| P: |
Gatton, Surrey, England |
| D: |
Between 28 Oct 1263 and 27 Oct 1264 |
| P: |
Surrey, England |
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1271 - 1336 (66 years)