Hildouin III Comte de  MONTDIDIER & Roucy
Hildouin III Comte de  was born about 1023.  He died about 1063.

 Alice de ROUCY
Alice de was born about 1030.  She died in 1069.

 Beatrix de MONTDIDIER
Beatrix de was born in 1069.  She died after September 2nd, 1129.