Nielsen Hayden genealogy
Family: Albrecht I of Brunswick / Agnes of Brunswick-Lüneburg (F13351)
m. Bef 17 Aug 1372Ernst of Brunswick (1297-1361) 
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Adelheid of Everstein ( -1377)
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| Magnus II of Brunswick (1328-1373)
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| Katharina of Anhalt ( -1390)
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Elisabeth of Brunswick-Lüneburg (1370-1422)  |
| Albrecht I of Brunswick (1339-1383)
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| Agnes of Brunswick-Lüneburg ( -1410)
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| Erich of Brunswick ( -1427) |