Nielsen Hayden genealogy
Family: Baudouin d'Avesnes / Félicité de Coucy (F15120)
m. Mar 1256
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Bouchard IV d'Avesnes (1181-1244)
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Margaret II of Flanders (1202-1280)
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John d'Avesnes (1218-1257)  |
| Thomas II de Coucy ( -1252)
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| Mahaut de Rethel ( -1259)
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| Agnes de Coucy ( -1277) |
| Baudouin d'Avesnes (1219-1295)
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| Félicité de Coucy ( -1307)
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| Beatrice de Beaumont d'Avesnes (1258-1321) |