Nielsen Hayden genealogy
Descendants of Ivan Vsevoloditch of Polock
Ivan Vsevoloditch of Polock
   └─ Jewna Iwanowna of Polock ( - 1344)
    Gediminas, Grand Duke of Lithuania (Abt 1257 - Abt 1341)
       └─ Dannila of Lithuania ( - 1364)
        Waclaw of Masovia (Abt 1293 - 23 May 1336)(m. Bef 6 Dec 1320)
            + Heinrich III of Silesia (Between 1312 and 1321 -
            13 Apr 1369 bur.Augustinian Cloister, Zagan, Zagan, Silesia, Poland)(m. Bef 6 Sep 1337)
            13 Apr 1369 bur.Augustinian Cloister, Zagan, Zagan, Silesia, Poland)(m. Bef 6 Sep 1337)