Nielsen Hayden genealogy
Family: Ludwig IV, Holy Roman Emperor / Margareta of Hainault (F13158)
m. 26 Feb 1324Ludwig II of Bavaria (1229-1294) 
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Mathilde von Habsburg (1253-1304)
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Rudolf I of Bavaria (1274-1319)  |
| Agnes of Bavaria (1276-1345) |
| William III of Hainault (1286-1337)
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| Jeanne de Valois (1294-1342)
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| Johanna of Holland and Hainault (1312-1374) |
| Philippa of Hainault, Queen Consort of England (1314-1359) |
| Ludwig IV, Holy Roman Emperor (1282-1347)
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| Margareta of Hainault (1310-1356)
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| Albrecht I (1336-1404) |