Guillaume was born in 1302, the son of unknown parents. The place is not known.
His wife was Gaillarde de Lévis. They were married, but the date and place have not been found. They had no known children.
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | 1302 |
|
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | seigneur de Montagnac |
Note 1
Son of Amalric II, vicomte de Narbonne and Jeanne de l’Isle-Jourdain