| Hildouin III Count of Montdidier |
| Father: Hildouin II Count of Montdidier | Mother: |
| Born: abt 1000 of Montdidier, Somme, France |
Died: |
| Spouse: | Married: |
| Children:
Hildouin IV Count of Montdidier | Brothers & Sisters:
Manasses Count of Dammartin & Damp Martin |