Gertrude de Louvain was born circa 1095 to Henri III de Louvain (c1063-1095) and Gertrude of Flanders (1080-1117) and died circa 1142 of unspecified causes. She married Lambert de Montaigu (-aft1140) .
Children
| Name | Birth | Death | Joined with |
| Conon de Montaigu | |||
| Godefroi de Montaigu | |||
| Gertrude de Montaigu (c1120-c1167) | 1120 | 1167 | Raoul II de Nesle (1095-1157) Everard III Radoul (c1125-1189) |
Footnotes (including sources)
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