Guillaume was born about 1265, the son of unknown parents. The place is not known.
He died in 1313. The place is not known.
His wife was Guillemette de la Mestre. They were married, but the date and place have not been found. Their three known children were Guillaume II (c1289-?), Pierre (1291-1352) and Almodis Dauphine (?-?).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1265 |
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| Death | 1313 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | seigneur de Rosiers d'Égletons |