Jean was the son of unknown parents. The date and place of his birth have not been found.
His wife was Marie l'Estendart. They were married, but the date and place have not been found. Their only known child was Hector I (?-<1415).
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | seigneur d'Ons en Bray | |||||
| Nobility Title | baron du Chesne Doré |