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Father: Guillaume William aka Hugues Grandmesnil
Born: 1092, England
Marr: 1128
Died: 1178, England
Mother: Adelize Alice Beaumont-sur-l'Oise
Born: 1105, England
Died: 1191, France
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 | Robert de Beaumont, 3rd Earl of Leicester 
Born: 1135 - Leicester, Leicestershire, England
Marr: 1155 - Leicester, Leicestershire, England
Died: 31 AUG 1190 - Durrës, Durres, Albania
Other Spouses:
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 | Petronilla de Grandmesnil, Countess of Leicester 
Born: ABT 1145 - Grentemesnil, Calvados, Basse-Normandie, France
Died: 1 APR 1212 - Beaumont, Leicestershire, England
Other Spouses:
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 | 1. Margaret de Beaumont, Countess of Winchester  Born: ABT 1160 - Leicester Castle, Leicestershire, England Marr: - Saer de Quincy, 1st Earl of Winchester Died: - Brackley, Northamptonshire, England |  | 2. Roger de Beaumont  Born: 1160 - Leicester, Leicestershire, England Marr: - Died: - Scotland |  |
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 | 3. sometimes known as Robert FitzParnel Beaumont , 4th Earl of Leicester  Born: 1164 - Beaumont, Leicestershire, England Marr: - Died: 21 OCT 1204 - Leicester, Leicestershire, England |  | 4. Sir William de Beaumont Born: 1159 - Beaumont, Allier, Auvergne, France Marr: - Died: 1196 - |  |
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 | 5. Amice de Beaumont, of Leicester  Born: ABT 1154 - Beaumont-le-Roger, Nord-Pas-de-Calais, France Marr: - Died: 3 SEP 1215 - Rochefort, Charente-Maritime, Poitou-Charentes, France |  | 6. Mabel De Beaumont Born: 1162 - Leicester, Leicestershire, England Marr: - Died: - |  |
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 | 7. Geoffrey de Beaumont  Born: 1161 - Leicester, Leicestershire, England Marr: - Died: ABT 1162 - Leicestershire, England |  | 8. Hawise Beaumont Born: 1165 - Leicester, Leicestershire, England Marr: - Died: - |  |
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Father: Gilbert de Gaunt
Born: 1086, England
Marr:
Died:
Mother: Suzanne De Bricquebec
Born: 1055, France
Died:
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 | Guillaume William aka Hugues Grandmesnil 
Born: ABT 1092 - Hinckley, Leicestershire, England
Marr: 1128 - Leicester, Leicestershire, England
Died: 1178 - Hinckley, Leicestershire, England
Other Spouses:
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 | Adelize Alice Beaumont-sur-l'Oise 
Born: ABT 1105 - Hinckley, Leicestershire, England
Died: 11 JUL 1191 - Marne, Loire, Rhône-Alpes, France
Other Spouses:
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 | 1. Petronilla de Grandmesnil, Countess of Leicester  Born: ABT 1145 - Grentemesnil, Calvados, Basse-Normandie, France Marr: 1155 - Robert de Beaumont, 3rd Earl of Leicester Died: 1 APR 1212 - Beaumont, Leicestershire, England |  | 2. Alice De Grentmesnil Born: ABT 1136 - Hinckley, Leicestershire, England Marr: - Died: - |  |
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Father: Gilbert de Gent, Baron of Folkingham
Born: 1048, Belgium
Marr:
Died: 1095, England
Mother: Comtesse Alix (Alicia, Alice) de Montfort-sur-Risle
Born: 1050, France
Died: 1094, England
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 | Gilbert de Gaunt 
Born: 1086 - Folkingham, Lincolnshire, England
Marr: -
Died: -
Other Spouses:
Emma De Meulles
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 | Suzanne De Bricquebec 
Born: ABT 1055 - Bricquebec, Manche, Basse-Normandie, France
Died: -
Other Spouses:
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 | 1. Adelize Alice Beaumont-sur-l'Oise  Born: ABT 1105 - Hinckley, Leicestershire, England Marr: 1128 - Guillaume William aka Hugues Grandmesnil Died: 11 JUL 1191 - Marne, Loire, Rhône-Alpes, France |  |
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Father: Hugh de Montfort
Born: 1018, France
Marr: 1040
Died: 1088, France
Mother: Alice Beauffou
Born: 1033, France
Died: 1108, France
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 | Gilbert de Gent, Baron of Folkingham 
Born: 1048 - Alost, Flanders, Belgium
Marr: -
Died: 1095 - Bourne, Lincolnshire, England
Other Spouses:
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 | Comtesse Alix (Alicia, Alice) de Montfort-sur-Risle 
Born: 1050 - Montfort Sur Risle, Eure, Haute-Normandie, France
Died: 1094 - Folkingham, Lincolnshire, England
Other Spouses:
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 | 1. Gilbert de Gaunt  Born: 1086 - Folkingham, Lincolnshire, England Marr: - Suzanne De Bricquebec (other spouses) Died: - |  | 2. Alice Gant Born: - Folkingham, Lincolnshire, England Marr: - Died: - England |  |
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