Nielsen Hayden genealogy
Descendants of Béla IV, King of Hungary
1206 - 1270 (64 years)Father: András II, King of Hungary (1176 - 21 Sep 1235)
Mother: Gertrud von Meran (Abt 1185 - 28 Sep 1213)
Béla IV, King of Hungary (1206 - 3 May 1270)
Maria Laskarina (Abt 1206 of Nicea, Anatolia - 1270)(m. Abt 1218)
   ├─ Constance of Hungary
   │ Leo Danilowitsch, King of Halicz (Abt 1228 - 1301)(m. Between 1251 and 1252)
   │    └─ Jurij I Lvovitsch, King of Halicz (24 Apr 1252 - 1308)
   │     Euphemia of Kujawien ( - 18 Mar 1308)
   │        └─ Marija Jurjewma of Halicz (Bef 1293 - 11 Jan 1341) =>
   │         + Trojden I of Masovia (Between 1284 and 1286 - 13 Mar 1341)(m. Bef 1310)
   ├─ Anna of Hungary (Abt 1226 - ??)
   │ Rosztiszlo, King of Bulgaria; Grand Duke of Kiev (Between 1212 and 1225 - Abt 1264)(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)
   │        │ + Boleslaw II of Masovia (Abt 1251 - 20 Apr 1313)(m. 1291)
   │        └─ 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)
   ├─ Istvan V, King of Hungary (Dec 1239 - 1 Aug 1272)
   │ Erszebet of Kumania ( - Aft 1290)
   │    ├─ Anna of Hungary ( - Abt 1284)
   │    │ + Andronicus II Palaeologus, Emperor of Byzantium ( - 1332)
   │    └─ Maria I, Queen of Hungary (Abt 1257 - 25 Mar 1323 Naples, Campania, Italy)
   │     Charles II, King of Naples, Sicily, and Jerusalem (1254 - 5 May 1309 Casanueva, near Naples, Campania,
   │     Italy)(m. 1270)
   │     Italy)(m. 1270)
   │        ├─ Margaret of Anjou (1272 - 31 Dec 1299 bur.Church of St. Jacques, Paris, France) =>
   │        │ + Charles of France (12 Mar 1270 Vincennes, Val-de-Marne, France - 16 Dec 1325 Le Perray-en-Yvelines,
   │        │ Île-de-France, France)(m. 16 Aug 1290 Corbeil, near Paris, France)
   │        │ Île-de-France, France)(m. 16 Aug 1290 Corbeil, near Paris, France)
   │        └─ Eleanora d'Anjou (Aug 1289 - 9 Aug 1341 Catania, Sicily) =>
   │         + Federico II of Aragón, King of Sicily (13 Dec 1272 - 25 Jun 1337 Palermo, Sicily)
   │         (m. May 1303 Messina, Sicily)
   │         (m. May 1303 Messina, Sicily)
   └─ Helene of Hungary (Abt 1244 Esztergom, Hungary - 6 Mar 1298 Gniezno, Poland)
    Boleslaw (1221 - 7 Apr 1279)(m. 1257)
       └─ Elisabeth von Kalisch (Between 1261 and 1263 - 28 Sep 1304)
        Heinrich V of Silesia (Between 1245 and 1250 - 22 Feb 1296)(m. Between 1277 and 1279)
           ├─ Euphemia of Silesia and Breslau (Between 1278 and 1283 - 4 Apr 1347) =>
           │ + Otto II of Carinthia (Abt 1265 - 25 May 1310)(m. 1297)
           └─ Boleslaw III of Silesia (23 Mar 1291 - 20 Apr 1352 bur.Lubiaz, Lower Silesia, Poland) =>
            + Margareta of Bohemia (Between Apr 1296 and May 1296 - 7 Apr 1322 bur.Zbraslav, Bohemia)
            (m. Between 1308 and 1310)
            (m. Between 1308 and 1310)