Hildouin I Comte de Montdidier
Hildouin I Comte de was born in 0930 in Arcisur, Aube, France.  He died after 0960.

 Helsinde
Helsinde was born in 0934 in of Rameru, Aube, France.  Helsinde is no longer alive.

 Hildouin II Comte de Montdidier
Hildouin II Comte de was born in 0960 in Montdidier, Somme, France.  He died at the age of 32 in 0992.