*Guillaume I de Ponthieu
born abt 0890
died abt 0965

father:
*Rotgaire (or Roger) de Ponthieu
died about 0957

mother:
unknown

siblings:
unknown

spouse:
unknown

children:
*Hilduin de Ponthieu Count of Montreuil
born abt 0915
died 0981

biographical and/or anecdotal:

notes or source:
http://genweb.net/~raven/html/d131.htm#P2504