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8 | | Robert de Beaumont , Earl of Leicester | => |
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 | B: | ABT. 1046 |
| P: | Pont-Audemer, Beaumont, Normandy, France |
| M: | 1096 |
| 4 | | Robert de Beaumont | P: | France |
 |  | |
 | B: | 1104 | | D: | 5 Jun 1118 |
| P: | Leicester, Leicestershire, England | P: | Leicestershire, England |
| M: | AFT. Nov 1120 |
| P: | Of, , Brittany, France | 9 |  | Elizabeth (Isabel) de Crepi , Of Vermandois | => |
| |  |
| D: | 5 Apr 1168 |  | B: | ABT. 1081 |
| P: | England | P: | Of, Valois, Bretagne, France |
| D: | 13 Feb 1130/31 |
| P: | England |
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| 2 | | Robert de Beaumont | | 10 | | Ralph de Waiet | => |
 |  |  |  |
 | B: | ABT. 1121 | |  | B: | ABT. 1078 |
| P: | Of, Beaumont, France | P: | Of, Montfort, Normandy, France |
| M: | ABT. 1155 | M: | |
| P: | | 5 |  | Amicia De Waer | P: | |
|  | |
| D: | 31 Aug 1190 |  | B: | ABT. 1100 | | D: | | |
| P: | Durazzo Provence, West Albania | P: | Of, Norfolk, England | P: | |
| D: | | |
| P: | | 11 |  | | |
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| 1 | Amicia Harcourt | |
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 | B: | ABT. 1160 | | | | | 12 | | Ivo de Grentesmaismil | => |
|  |  |
| P: | Of, Leicester, Leicestershire, England |  | B: | ABT. 1064 |
| D: | 3 Sep 1215 | P: | Of, , Normandy, France |
| P: | | M: | |
| | 6 | | Hugh de Grentesmaismil | P: | |
 |  | |
| |  | B: | ABT. 1092 | | D: | 1118 |
| P: | Of, Hinckley, Lancastershire, England | P: | |
| M: | |
| P: | | 13 |  | Miss de Gant | => |
| | |  |
| D: | |  | B: | ABT. 1066 |
| P: | | P: | Of, , Normandy, France |
| D: | |
| P: | |
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| 3 |  | Petronilla Grentesmaismil | | 14 | | | |
 |  |  |  |
|  | B: | ABT. 1134 | |  | B: | |
| P: | Of, , Leicestershire, England | P: | |
| D: | 1 Apr 1212 | M: | |
| P: | Leicester, Leicestershire, England | 7 |  | Mrs-Hugh De Grentmesnil | P: | |
| |  | |
 | B: | ABT. 1105 | | D: | | |
| P: | Of, Hinckley, Leicestershire, England | P: | |
| D: | | |
| P: | | 15 |  | | |
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