Raoul (Rodolph) Count Of Guisnes
Raoul (Rodolph) was born in 1013.  He died at the age of 23 in 1036.

 Rosella De St. Pol
Rosella was born in 1012.

 Eustace Count Of Guisnes
Eustace was born in 1027.  He died at the age of 25 in 1052.

 Robert Le Blount
Robert was born in 1030.

 William Le Blount
William was born in 1033.