Wilhelm was born on 12 MAY 1330 in Frankfurt am Main, Darmstadt, Hessen, Deutschland , the son of Ludwig IV von Bayern and Marguerite d'Avesnes.
He died on 15 APR 1388 in le Quesnoy.
His wife was Maud Plantagenêt, who he married in 1352. The place has not been found. They had no known children.
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Wilhelm I von Bayern |
Ludwig IV von Bayern |
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Marguerite d'Avesnes |
Guillaume de Hainault |
Jean d'Avesnes |
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Philippine de Luxembourg |
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Jeanne de Valois |
Charles de Valois |
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Marguerite d'Anjou |
| Event | Date | Details | Source | Multimedia | Notes | ||
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| Birth | 12 MAY 1330 |
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| Death | 15 APR 1388 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | FROM 1347 TO 1349 | herzog von Bayern | ||||
| Nobility Title | FROM 1349 TO 1353 | herzog von Niederbayern | ||||
| Nobility Title | FROM 1353 TO 1389 | herzog von Bayern-Straubing | ||||
| Nobility Title | FROM 1354 TO 1388 | V. graf von Holland und Seeland | ||||
| Nobility Title | FROM 1356 TO 1388 | III. graf des Hennegaus |