Nielsen Hayden genealogy
Family: Iwan Asen II, Tsar of Bulgaria / Maria of Hungary (F21749)
m. Jan 1221
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Iwan Asen I, Tsar of Bulgaria (1150-1196) |
| András II, King of Hungary (1176-1235)
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Gertrud von Meran (1185-1213)
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Béla IV, King of Hungary (1206-1270)  |
| St. Elisabeth of Hungary (1207-1231) |
| Iwan Asen II, Tsar of Bulgaria (1190-1241)
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| Maria of Hungary ( -1237)
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| Elena of Bulgaria & Vlachia (1224-1253) |