Nielsen Hayden genealogy
Family: Louis I / Jeanne (F14847)
m. Dec 1290Robert III of Flanders (1248-1322) 
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Yolanda of Burgundy ( -1280)
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Yolanda of Flanders ( -1313)  |
| Hugues IV ( -1276)
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| Isabelle de Grandpré ( -1292)
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| Louis I ( -1322)
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| Jeanne ( -1328)
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| Louis II (1304-1346) |