Isabeau was the daughter of Raoul V de Gaucourt and Aleaume de Berghes. The date and place of her birth have not been found.
She had two marriages/partners. Her first husband was Jean de Neillac. They were married, but the date and place have not been found. They had no known children.
Her second husband was Berangon d'Arpajon. They were married, but the date and place have not been found. They had no known children.
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | dame de Berghes |