Eustace I of Boulogne
Eustace I of was born in 1004.

 Mathilda (Maud) of Louvain
She died after 1030.

 Lambert II von Boulogne of Lens
Lambert II von Boulogne of was born about 1022.  He died in 1054.

 Gerberge (Ida) of Lorraine
Gerberge (Ida) of was born before 1030.

 Eustace II Aux Gernons of Boulogne
Eustace II Aux Gernons of was born about 1030 in Boulogne, Pas-de-Calais, France.  He died about 1070.