Guillaume de Montfort | |
|---|---|
| Seigneur of Montfort | |
| Predecessor | New title |
| Successor | Amaury I de Montfort |
| Born | before 990 |
| Died | before 1053 |
| Noble family | House of Montfort |
| Spouse(s) | Albreda de Nogent |
| Issue | Amaury I de Montfort |
| Father | Amaury, Count of Valenciennes (possibly) |
Guillaume de Montfort, also known as Guillaume of Hainaut, was a French nobleman of the end of the 10th century, the first Lord of Montfort-l'Amaury.
He was succeeded as Lord of Montfort-l'Amaury by his son Amaury I de Montfort.
Guillaume is possibly the son[1][2] of Amaury, Count of Valenciennes.