| | Nicolas "Nicolas le Beau" d' Avesnes-Oisy 1130–1170 Mahaut de Namur 1115–1169 | | |
| | Petronilla d' Avesnes-Oisy 1130– Jean "Jean II" de Peteghem-Cysoing 1130– | | |
| | Wauthier "Wauthier I" d' Avesnes-Oisy 1110–1149 | | |
| | Richildis d' Avesnes 1075–1110 Fastré "Fastré II" d' Avesnes-Oisy 1075–1111 | | |
| | Ada Ramerupt-Montdidier 1047–1121 Thierry "Thierry I" d' Avesnes 1050–1106 | | |
| | Hildouin Ponthieu-Montdidier 998–1063 | | | | Hildouin Ponthieu-Ramerupt 975–1031 Lesselina de Torqueville 970–1030 | | | | Hildouin Ponthieu-Montdidier 951–992 | | | | Gertrude de Bassigny 910– | | |
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