Guillaume was born about 1310, the son of unknown parents. The place is not known.
His wife was Isabeau de Nédonchel. They were married, but the date and place have not been found. Their only known child was Louise (c1340-c1385).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1310 |
|
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | seigneur de Beaupré |