Ide de Louvain was born 1077 to Henri II de Louvain (1020-1078) and Adela van Betuwe (1027-aft1086) and died 1139 of unspecified causes. She married Baldwin de Hainaut (1056-1098) .
Children
| Name | Birth | Death | Joined with |
| Baldwin III de Hainaut (?-1120) | 1120 | Yolanda van Gelre (-1131) | |
| Louis de Hainaut (?-?) | |||
| Simon de Hainaut (?-?) | |||
| Henry de Hainaut (?-?) | |||
| Willem de Hainaut (?-aft1117) | |||
| Arnoul de Hainaut (c1093-aft1117) | 1093 | 1117 | Beatrix de Ath (c1080-c1127) |
| Ida de Hainaut (c1085-aft1101) | 1085 | 1101 | Thomas de Coucy (1073-c1130) |
| Richilde de Hainaut (c1095-aft1118) | |||
| Aelidis de Hainaut (bef1098-1153) | 1098 | 1153 | Nicolas II de Rumigny (c1074-aft1153) |