Agnes de Hainaut was born 1142 to Baudouin IV de Hainaut (1108-1171) and Alix de Namur (1109-1168) and died 1168 of unspecified causes. She married Raoul I de Coucy (c1134-1191) 1164 JL .
Children
| Name | Birth | Death | Joined with |
| Ada de Coucy | |||
| Yolande de Coucy (c1164-1222) | 1164 | 1222 | Robert II de Dreux (1154-1218) |
| Isabeau de Coucy (c1168-c1200) | 1168 | 1200 | Raoul I de Roucy (-1196) Henri III de Grandpré (c1140-1211) |