Nielsen Hayden genealogy
Descendants of Anna of Masovia
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Father: Waclaw of Masovia
(Abt 1293 - 23 May 1336)
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Mother: Dannila of Lithuania
( - 1364)
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Anna of Masovia (Bef 1324 - 16 Feb 1363)
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(m. Bef 6 Sep 1337)
   
Ruprecht of Silesia
(Between 1340 and 1347 - Bef 12 Jan 1409 bur.Legnica, Lower Silesia, Poland)
    (m. Bef 10 Feb 1372)
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    (m. Bef 10 Feb 1372)
       
Rudolf III of Saxony
(Abt 1373 - 9 Jun 1419 bur.Wittenberg, Saxony-Anhalt, Germany)(m. 6 Mar 1396)
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           └─ Barbara of Saxony
(Abt 1406 - 10 Oct 1465 Bayreuth, Bavaria, Germany) =>
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            + Johann "the Alchemist" of Brandenburg
(Bef 29 Sep 1403 - 16 Nov 1464 Baiersdorf, Bavaria, Germany)
            (m. 26 May 1412)
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            (m. 26 May 1412)