Nielsen Hayden genealogy
Family: Konrad I / Konstancja of Poland (F15173)
m. 1260
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Johann I of Brandenburg (1213-1266)
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Sophie of Denmark (1217-1247)
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| Przmyslaw I (1220-1257)
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| Elisabeth von Schlesien (1224-1265)
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| Konrad I (1236-1304)
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| Konstancja of Poland (1245-1281)
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Agnes of Brandenburg ( -1330)  |