Nielsen Hayden genealogy
Family: Jan I of Brabant / Margarethe of Flanders (F7974)
m. Abt 5 Sep 1270Henry III of Brabant (1230-1261) 
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Alix of Burgundy (1233-1273)
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Godfried of Brabant (1255-1302)  |
| Marie of Brabant, Queen Consort of France (1256-1321) |
| Guy de Dampierre (1226-1304)
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| Mathilde de Béthune ( -1264)
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| Robert III of Flanders (1248-1322) |
| Guillaume IV de Dampierre (1249-1311) |
| Jan I of Brabant (1252-1294)
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| Margarethe of Flanders (1254-1285)
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| Jan II of Brabant (1275-1312) |
| Margareta of Brabant (1276-1311) |