1. Hugh Lupus d'Avranches, Earl of Chester married Ermentrude de Clermont.
Ermentrude de Clermont, daughter of Hugh de Clermont (c. 1030-1101) and Margaret de Montdidier (c. 1046- ), was born circa 1066. She and Hugh Lupus d'Avranches, Earl of Chester had the following children:
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2. Robert I FITZHUGH, son of Hugh Lupus d'Avranches, Earl of Chester and Ermentrude de Clermont, was born in 1110.
Robert I FITZHUGH had the following children:
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3. Robert II FITZHUGH, son of Robert I FITZHUGH, was born in 1134.
Robert II FITZHUGH had the following children:
| 4 | Sarah FITZHUGH (c. 1160-aft1204). Sarah was born circa 1160. She died after 1204. |