Eustace * I Boulogne
Eustace * I was born in 1004.  He died at the age of 43 in 1047.

 Maud * De Louvain
Maud * was born about 1006.

 Lambert * II De Boulogne
Lambert * II was born in 1022 in of Lens.  He died at the age of 32 in 1054.

 Eustace *
Eustace was born in 1030 in of Boulogne.  He died about 1080.¹ 

 Godfrey De Boulogne

 UNKNOWN Ida
UNKNOWN was born in of Boulogne.