Children of Alice Alix Isabelle "Adelaide" De Roucy and Hildouin Hildwin De Montdidier are:
| || i.||Hildouin De Roucy was born 1032, and died 1063.|
| || ii.||Margaret "Marguerite" De Roucy was born Abt 1035 in Montdidier, Somme, France, and died Abt 1110. She married Hugh Mouchy Creil De Clermont Abt 1065 in Picardy, France, son of Renaud De Clermont and Ermengardis De Clermont.
He was born Abt 1030 in Clermont, Beauvais, Oise, France, and died 1101 in Northamptonshire, England.
| || iii.||Adela Or Agnes De Montdidier was born 1036, and died 1068. She married Arnulf Or Arnold, son of Louis and Sophia De Verdun.
He died 16 Apr 1106.
|17.|| iv.||Adelaide De Roucy was born 1045. She married Gauthier Or Walter De Roeux.
He was born 1045.
| || v.||Felicie De Roucy was born 1045, and died 24 Apr 1123. She married Sancho Of Navarre Ramirez, son of Ramiro De Aragon and Gilberga Or Hermesenda De Conserans.
He was born Abt 1045, and died 6 Jul 1094 in Huesca, Spain.
| || vi.||Beatrice De Roucy De Montdidier was born 1047 in Of Montdidier, France, and died 2 Sep 1129. She married Geoffrey De Mortaigne, son of Rotrou De Perche and Adela Or Adelaide De Domfort.
He was born Abt 1033 in Of Perche, Normandy, and died Oct 1100.
| || vii.||Andre De Roucy was born 1050.|