Count Enguerrand de Ponthieu
Count Enguerrand was born about 0978 in Ponthieu, Picardy, France.  He died about September 12th, 1045.

 Adelaide de Gand
Adelaide was born about 0980.  Adelaide is no longer alive.

 Count Hugues de Ponthieu
Count Hugues was born about 1014.  He died on November 20th, 1052.