Guillaume was born in 1486, the son of unknown parents. The place is not known.
He died in 1518. The place is not known.
His wife was Anne de Valois, who he married in 1508 in Blois, Loir-et-Cher, Centre, France . They had no known children.
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | 1486 |
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| Death | 1518 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | marquis de Montferrat |