Eustace le Blount of Guisnes
Eustace le Blount of was born in 1027 in Guisnes, Picardy, France.

 Susanna de Granines
Susanna was born before 1035.  She died after 1051.

 Baldwin I de Guines
Baldwin I was born about 1050.  He died in 1091.

 William of Guisnes
William of was born about 1051.  He died in 1071.