*Geoffrey I Viscount of Chateaudun
born about 0906
died about 0963

father:
given in one source as
*Hilduin de Ponthieu Count of Montreuil
born about 0897
died 0981

mother:
unknown

siblings:
*Gordeschilda (Gohilda-Godchilde) de Ponthieu born about 0944 Normandy
*Hildouin Count of Breteuil born about 0970 Breteuil, Eure, France died 1060
Hugues I de Ponthieu

spouse:
*Hermengarde wife of Geoffrey I of Chateaudun
(end of information)

children:
*Hugues I Viscount of Chateaudun
born about 0936
died before 0989

biographical and/or anecdotal:

notes or source:
ancestry.com