Guillaume was born in 0940, the son of unknown parents. The place is not known.
He died about 0985. The place is not known.
His wife is not known. They were married, but the date and place have not been found. Their only known child was Guillaume II (0986-1022).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | 0940 |
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| Death | ABT 0985 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | 0985 | seigneur de Montpellier (Monspestularius) |