Nielsen Hayden genealogy
Family: Floris IV / Machteld of Brabant (F13011)
m. Aft 5 Nov 1214Willem I (1170-1222) 
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Aleida van Gelre (1187-1218)
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| Henri I of Brabant (1158-1235)
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| Machtild of Boulogne (1169-1210)
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Margareta of Brabant (1192-1231)  |
| Aleidis of Brabant (1194-1266) |
| Henri II of Brabant (1207-1248) |
| Floris IV (1210-1234)
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| Machteld of Brabant (1200-1267)
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| Adelaide of Holland (1230-1284) |
| Margaretha van Holland (1234-1277) |