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Alix de Montmorency was born 1173 to Bouchard V de Montmorency (c1129-1189) and Florence de Hainaut (1145-1181) and died 1226 of unspecified causes. She married Simon V de Montford (c1170-1218) 1190 JL .
Children
| Name | Birth | Death | Joined with |
| Amaury VI de Montfort (c1190-1241) | 1190 | April 1241 | Beatrice du Viennois (1205-aft1248) |
| Guy de Bigorre (-1220) | |||
| Simon of Leicester (-1265) | 1208 | 4 August 1265 Evesham, Worcestershire, England, United Kingdom | Eleanor of England (1215-1275) |
| Robert de Montfort | |||
| Amicie de Montfort (c1200-1253) | 1200 | 20 February 1253 | Gaucher I de Joigny (c1165-1237) |
| Laure de Montfort | |||
| Pétronille de Montfort (1211-) | |||