Baudouin was the son of Jean I d'Avesnes and Aleide de Hollande. The date and place of his birth have not been found.
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Jean I d'Avesnes |
Bouchard IV de Guise |
Jacques d'Avesnes |
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Adèle de Guise |
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Marguerite II de Constantinople |
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Aleide de Hollande |
Floris IV van Holland |
Willem I van Holland |
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Aleid van Gelre |
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Mathilde de Brabant |
Henri I de Brabant |
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Mathilde de Boulogne |