Mathilde was the daughter of unknown parents. The date and place of her birth have not been found.
Her husband was Geoffroy V de Châteaubriant. 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 Pordic |
Note 1
fille de Conan de Pordic et Aliénor de Porhoët