Marguerite de Roucy was born circa 1045 to Hilduin IV de Montdidier (c998-c1063) and Alix de Roucy (c1010-1063) and died after 1103 of unspecified causes. She married Hugues I de Clermont (c1030-1102) .
Children
| Name | Birth | Death | Joined with |
| Adelize van Clermont ca 1080-ca 1124 | |||
| Renaud de Clermont (c1075-c1152) | 1075 | 1152 | Adelaide de Vermandois (1064-1120) Clémence de Bar (c1125-aft1183) |
| Ermtrude van Clermont Beauvais ca 1084-ca 1115 | |||
| Adelaïde de Clermont (1076-c1120) | 1076 | 1120 | Gilbert Fitz Richard (c1066-c1117) Hervé de Montemorentino de Marisco |
| Beatrix van Clermont Beauvais ca 1088-ca 1150 | |||
| Richilde de Clermont (c1090-c1140) | 1090 | 1140 | Dreux II de Mello (1080-1136) |
Footnotes (including sources)
| ‡ General |