Nielsen Hayden genealogy
Family: Przemysl Ottokar I, King of Bohemia / Constance of Hungary (F14969)
m. Abt 1198Wladislaw II, King of Bohemia (1110-1175) 
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Anna de Châtillon (1154-1184)
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Margaret of Hungary (1175-1223)  |
| András II, King of Hungary (1176-1235) |
| Przemysl Ottokar I, King of Bohemia (1155-1230)
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| Constance of Hungary ( -1240)
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| Anna of Bohemia (1201-1265) |
| Wenceslas I, King of Bohemia (1205-1253) |