Isabelle was born about 1345, the daughter of unknown parents. The place is not known.
Her husband was Colard dit l'Orangeois de Rély. They were married, but the date and place have not been found. Their only known child was Jean II (c1365-?).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1345 |
|
| Association | Relationship |
|---|---|
| Jeanne de Rély (dame de Bléquin) | daughter? |