Isabeau was the daughter of Simon III de Lalaing and Mahaut d'Aspremont. The date and place of her birth have not been found.
|
Simon III de Lalaing |
sir Nicolas II de Lalaing |
| ||||||
| | ||||||||
|
Agnès de Willerval |
| |||||||
| | ||||||||
|
Mahaut d'Aspremont |
Joffroi III d'Aspremont |
| ||||||
| | ||||||||
|
Isabelle de Quiévrain |
| |||||||
| |