Nielsen Hayden genealogy
Family: Albrecht I / Alessina de Monferrato (F15023)
m. 1 Nov 1266
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Otto I of Brunswick-Lüneburg (1204-1252)
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Matilde von Brandenburg (1210-1261)
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Adelheid of Brunswick-Lüneburg ( -1274)  |
| Agnes of Brunswick-Lüneburg ( -1302) |
| Helene of Brunswick-Lüneburg (1223-1273) |
| Boniface II (1202-1253)
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| Margereta of Savoy ( -1254)
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| Albrecht I (1236-1279)
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| Alessina de Monferrato ( -1285)
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| Heinrich I of Brunswick (1267-1322) |
| Albrecht II of Brunswick (1268-1318) |
| Matilde (1276-1318) |