Count Guy de Ponthieu I
Guy was born about 1036 in France.  He died on October 13th, 1101 in First Crusade.

 Ada d'Amiens
Ada was born in 1030 in Normandie, France.  She died at the age of 36 in March 1066.

 Agnes de Ponthieu
Agnes was born about 1066 in France.  She died in 1103 in Ponthieu, France.