Guillaume was born about 1225, the son of Richard II de Courcy and Mathilde du Hommet. The place is not known.
He died in 1289. The place is not known.
His wife was Anne de Marigny. They were married, but the date and place have not been found. Their only known child was Jean (c1260-?).
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Guillaume III de Courcy |
Richard II de Courcy |
Robert IV de Courcy |
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Mathilde du Hommet |
Richard II du Hommet |
Guillaume II du Hommet |
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Luce de Bruce |
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Aliénor d'Héroudeville |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Birth | ABT 1225 |
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| Death | 1289 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | baron de Courcy | |||||
| Nobility Title | seigneur de Rémilly et de Marigny |