Guillaume was the son of Guy I de la Roche-sur-Ognon and Agnès de Bruyère. The date and place of his birth have not been found.
He died in 1287. The place is not known.
His wife was Hélène Ange Comnène. They were married, but the date and place have not been found. They had no known children.
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Guillaume de la Roche |
Guy I de la Roche-sur-Ognon |
Othon IV de la Roche |
Pons II de la Roche |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Death | 1287 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | FROM 1280 TO 1287 | duc d'Athènes | ||||
| Nobility Title | FROM 1280 TO 1287 | bailli de Morea | ||||
| Nobility Title | FROM 1280 TO 1287 | seigneur de Thebes |