Isabeau was the daughter of unknown parents. The date and place of her birth have not been found.
She died in 1323. The place is not known.
Her husband was Robert III de Wavrin. They were married, but the date and place have not been found. They had no known children.
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Death | 1323 |
|
Note 1
Guillaume de Fiennes, II, b. Abt 1245, Wendover, Buckinghamshire, England , d. 11 Jul 1302, Courtral, Flandre, Occidential, Belgium & de Brienne, b. 1245-1252, Courtrain, Mynn, France , d. 1302