Nielsen Hayden genealogy
Family: Béla IV, King of Hungary / Maria Laskarina (F13107)
m. Abt 1218András II, King of Hungary (1176-1235) 
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Gertrud von Meran (1185-1213)
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St. Elisabeth of Hungary (1207-1231)  |
| Theodoros I Komnenos Laskaris, Emperor in Nicea (1175-1222)
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| Anna Komnena Angelina (1174-1212)
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| Béla IV, King of Hungary (1206-1270)
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| Maria Laskarina (1206-1270)
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| Anna of Hungary (1226- ) |
| Istvan V, King of Hungary (1239-1272) |
| Helene of Hungary (1244-1298) |