Guillaume was the son of Geoffroy III de la Guerche and Louise de Château-Gontier. The date and place of his birth have not been found.
He died on 04 SEP 1223. The place is not known.
His wife was Hersende de Sillé-le-Guillaume. They were married, but the date and place have not been found. Their three known children were Sibylle (1221-1251), Thomasse (c1215-?) and Guillaume IV (?->1263).
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Guillaume III de la Guerche |
Geoffroy III de la Guerche |
Hugues de la Guerche |
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Marquise de Craon |
Hugues I de Craon |
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Marquise de Vitré |
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Alard III de Château-Gontier |
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Mélissende |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Death | 4 SEP 1223 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | FROM 1195 TO 1223 | seigneur de la Guerche et de Pouancé | ||||
| Nobility Title | seigneur de Segré |
Note 1