Nielsen Hayden genealogy
Family: Heinrich I of Brunswick / Agnes von Meissen (F17423)
m. 1282Albrecht I (1236-1279) 
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Alessina de Monferrato ( -1285)
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Albrecht II of Brunswick (1268-1318)  |
| Matilde (1276-1318) |
| Albrecht II of Meissen (1240-1315)
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| Margarethe von Hohenstaufen (1237-1270)
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| Friedrich I of Meissen (1257-1323) |
| Heinrich I of Brunswick (1267-1322)
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| Agnes von Meissen (1263-1332)
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| Ernst of Brunswick (1297-1361) |