Nielsen Hayden genealogy
Descendants of Jurij I Lvovitsch, King of Halicz
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Father: Leo Danilowitsch, King of Halicz
(Abt 1228 - 1301)
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Mother: Constance of Hungary
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Jurij I Lvovitsch, King of Halicz (24 Apr 1252 - 1308)
       └─ Euphemia of Masovia
(Abt 1310 - Aft 1373 bur.Cieszyn, Silesia, Poland)
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Casimir I of Silesia
(Between 1276 and 1280 - Aft 21 Sep 1358 bur.Cieszyn, Silesia, Poland)
        (m. Between 1321 and 1324)
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        (m. Between 1321 and 1324)
           └─ Anna of Silesia
(Abt 1325 -
            1367 bur.Collegiate Church of the Holy Sepulchre, Legnica, Lower Silesia, Poland) =>
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            1367 bur.Collegiate Church of the Holy Sepulchre, Legnica, Lower Silesia, Poland) =>
            + Wenzel I of Silesia
(Between 1310 and 1318 - 2 Jun 1364 bur.Collegiate Church of the Holy Sepulchre,
            Legnica, Lower Silesia, Poland)(m. Between 1338 and 1340)
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            Legnica, Lower Silesia, Poland)(m. Between 1338 and 1340)