Ada de Montdidier
- Born circa 1045
- Deceased after 1121
Parents
- Hilduin de Ramerupt (c. 1010 - 1063), chevalier, comte d'Arcis-sur-Aube
- Adélaïde de Roucy (c. 998 - 1062)
Family
- Married with Godefroi de Guise (1045 - 1100), issuing
Guy (c. 1070 - 1141)
- Married with Godefroi d'Ath (1040 - ), issuing