Family: Count John I. d'Avenes / Adelaide of Holland (F7451)
Bouchard of Laon d'Avenes ( -1234) |
Margaret of Hainaut-Flanders (1200-1280) 
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| Count Florent IV of Holland ( -1235)
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| Mechtild Brabant (1185- )
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| William II of Holland, King of Germany (1233-1256) |
| Count John I. d'Avenes ( -1256)
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| Adelaide of Holland ( -1284)
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Count John II d'Avenes, Count of Holland (1250-1304)  |
