Hildouin DE MONTDIDIER
Hildouin was born in 1021 in Montdidier, Somme, France.  He died at the age of 41 in 1062.

 Adelaide Alice DE ROUCY
Adelaide Alice was born in 1014 in Rousy, Aisne, France.

 Marguerite DE MONTDIDIER
Marguerite was born in 1045 in Montdidier, Somme, France.  She died about 1110.

 Beatrice DE MONTDIDIER
Beatrice was born in 1051.  She died after 1129.