Adélaide de Gournay was born 1055 in Gournay-en-Bray to Hugues II de Gournay (1025-1074) and Basilie de Dammartin (1034-c1081) and died 1099 of unspecified causes. She married Yves V de Beaumont-sur-Oise (c1040-c1087) .
Children
| Name | Birth | Death | Joined with |
| Agnès de Beaumont-sur-Oise (1075-1103) | 1075 Beaumont-sur-Oise | 1103 | Bouchard IV de Montmorency (1077-1130) |
| Mathieu I de Beaumont-sur-Oise (1080-1155) | |||
| Hugues de Beaumont-sur-Oise | |||
| Adèle de Beaumont-sur-Oise | |||
| Jourdaine de Beaumont-sur-Oise | |||
Residences
Footnotes (including sources)
| ‡ General |