1. Renaud de Clermont Creil was born circa 1000 in Creil, Oise, France.
Renaud de Clermont Creil had the following children:
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2. Hugh de Clermont, son of Renaud de Clermont Creil, was born circa 1030 in Northampton. He married Margaret de Montdidier circa 1064. He died in 1101.
Margaret de Montdidier, daughter of Count Hildouin IV of Roucy and Montdidier (1020- ) and Countess Adela (Alix) of Roucy (c. 1026-1063), was born circa 1046 in Montdidier, Somme. She and Hugh de Clermont had the following children:
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3. Adeliza de Clermont, daughter of Hugh de Clermont and Margaret de Montdidier, was born circa 1066.
4. Ermentrude de Clermont, daughter of Hugh de Clermont and Margaret de Montdidier, was born circa 1066. She married Hugh Lupus d'Avranches, Earl of Chester.
Hugh Lupus d'Avranches, Earl of Chester and Ermentrude de Clermont had the following children:
| 6 | Robert I FITZHUGH (1110- ). Robert was born in 1110. |
5. Count Renaud II of Clermont, son of Hugh de Clermont and Margaret de Montdidier, was born circa 1108 in Clermont, Oise. He died in 1162 in Beauvaises. He married Clemence Bar.
Clemence Bar, daughter of Renaud de Bar (c. 1090- ) and Gisele de Vaudemont (c. 1095- ), was born circa 1122 in Dammartin, Ile-de-France. She and Count Renaud II of Clermont had the following children:
| 7 | Maud (Mahaut) de Ponthieu (c. 1150-aft1200). Maud was born circa 1150 in Ponthieu, Ain, France. She died after October 1200. |