Nielsen Hayden genealogy
Descendants of Rosztiszlo, King of Bulgaria; Grand Duke of Kiev
1225 - Abt 1264 (~ 52 years)Father: St. Michael of Chernigov, Grand Prince of Kiev (Abt 1185 - 20 Sep 1246)
Mother: Marija Romanowna of Halicz ( - Aft 1241)
Rosztiszlo, King of Bulgaria; Grand Duke of Kiev (Between 1212 and 1225 - Abt 1264)
Anna of Hungary (Abt 1226 - ??)(m. 1244)
   └─ Kunhata of Slavonia and Machva (Abt 1245 - 9 Sep 1285)
    Przemysl Ottokar II, King of Bohemia (Abt 1230 - 26 Aug 1278)(m. 25 Oct 1261 Bratislava, Slovakia)
       ├─ Kunigunde of Bohemia (Jan 1265 - 27 Nov 1321)
       │ Boleslaw II of Masovia (Abt 1251 - 20 Apr 1313)(m. 1291)
       │     + Dannila of Lithuania ( - 1364)(m. Bef 6 Dec 1320)
       └─ Wenceslas II, King of Bohemia (17 Sep 1271 - 21 Jun 1305 Prague, Bohemia)
        Guta von Habsburg (13 Mar 1271 - 18 Jun 1297 Prague, Bohemia)(m. 24 Jan 1285 Eger, Heves, Hungary)
           ├─ Elizabeth, Queen of Bohemia (20 Jan 1292 Prague, Bohemia -
           │ 28 Sep 1330 Vyšehrad, Prague, Bohemia) =>
           │ 28 Sep 1330 Vyšehrad, Prague, Bohemia) =>
           │ + John, King of Bohemia (10 Aug 1296 Luxemburg - 26 Aug 1346 Crécy-in-Ponthieu, Somme, Hauts-de-
           │ France, France)(m. 30 Aug 1310 Speyer Cathedral, Speyer, Germany)
           │ France, France)(m. 30 Aug 1310 Speyer Cathedral, Speyer, Germany)
           └─ Margareta of Bohemia (Between Apr 1296 and May 1296 - 7 Apr 1322 bur.Zbraslav, Bohemia) =>
            + Boleslaw III of Silesia (23 Mar 1291 - 20 Apr 1352 bur.Lubiaz, Lower Silesia, Poland)
            (m. Between 1308 and 1310)
            (m. Between 1308 and 1310)