Nielsen Hayden genealogy
Descendants of Gertrud von Meran
Abt 1185 - 1213 (~ 28 years)Father: Berthold VI von Andechs (1153 - 12 Aug 1204)
Mother: Agnes von Nieder-Lausitz (Abt 1154 - 25 Mar 1195)
Gertrud von Meran (Abt 1185 - 28 Sep 1213)
András II, King of Hungary (1176 - 21 Sep 1235)(m. Bef 1203)
   ├─ Maria of Hungary ( - 1237)
   │ Iwan Asen II, Tsar of Bulgaria (Abt 1190 - Jun 1241)(m. Jan 1221)
   │    └─ Elena of Bulgaria & Vlachia (1224 - Bef 1254)
   │     Theodoros II Doukas Laskaris, Emperor of Nicaea (1222 - Aug 1258)(m. 1235)
   │        └─ Eudokia Laskarina (Abt 1248 Nicaea, Asia Minor - 1311 Zaragoza, Aragón, Spain) =>
   │         + Guillaume Pierre I de Lascaris de Vintimille (m. Abt 1263)
   ├─ 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)
   │    ├─ 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)
   │    ├─ 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)
   │    │     Campania, Italy)(m. 1270)
   │    └─ 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)
   └─ St. Elisabeth of Hungary (1207 - 19 Nov 1231)
    Ludwig II (28 Oct 1200 - 11 Sep 1227 Otranto, Apulia, Italy)(m. 1220 Wartburg, Eisenach, Thuringia, Germany)
       └─ Sophia von Thüringen (20 Mar 1224 - 29 May 1275)
        Henri II of Brabant (1207 - 1 Feb 1248)(m. 1240)
           └─ Heinrich I von Hessen (24 Jun 1244 - 21 Dec 1308) =>
            + Adelheid of Brunswick-Lüneburg ( - 12 Jun 1274)(m. Bef 10 Sep 1263)