Nielsen Hayden genealogy
Family: Albrecht of Everstein / Richeza of Poland (F17428)
m. Aft 1166Wladislaw II, King of Poland (1105-1159) 
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Agnes of Babenberg (1110-1157)
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Boleslaw I of Silesia (1130-1201)  |
| Mieszko I of Oppeln (1132-1221) |
| Albrecht of Everstein ( -1198)
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| Richeza of Poland (1135-1185)
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