Nielsen Hayden genealogy
Family: John d'Avesnes / Adelaide of Holland (F12991)
m. 9 Oct 1246
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Bouchard IV d'Avesnes (1181-1244)
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Margaret II of Flanders (1202-1280)
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Baudouin d'Avesnes (1219-1295)  |
| Floris IV of Holland (1210-1234)
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| Machteld of Brabant (1200-1267)
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| Margaretha van Holland (1234-1277) |
| John d'Avesnes (1218-1257)
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| Adelaide of Holland (1230-1284)
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| John II of Hainault (1247-1304) |
| Jean II d'Avesnes (1247-1304) |
| Guy d'Avesnes, Bishop of Utrecht (1253-1317) |