Guillaume was born in 1251, the son of unknown parents. The place is not known.
He died in 1328. The place is not known.
His wife was Marie de Conty. They were married, but the date and place have not been found. Their only known child was Agnès (1288-1339).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | 1251 |
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| Death | 1328 |
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