Herbouin I of Ponthieu
Herbouin I of was born about 0840 in Ponthieu,Aisne,France.  He died about 0878.

 Helgaud III De Ponthieu
Helgaud III was born in 0860.  He died at the age of 66 in 0926.

 Heligaud II of Montreuil
Heligaud II of was born in 0860.  He died at the age of 66 in 0926.

 Helgaud II De Ponthieu
Helgaud II De was born in 0866.  He died at the age of 60 in 0926.