NOC4 William I de PONTHIEU
William I de was born in 0894.  He died at the age of 71 in 0965.

 Maud de St. pol sur mer de THEROUANNE
Maud de St. pol sur mer de was born in 0865.  She died at the age of 100 in 0965.

 NOC4 Cte de Montreuil Hilduin de PONTHIEU
Hilduin de was born in 0910.  He died at the age of 71 in 0981.