Nielsen Hayden genealogy
Family: James I, King of Aragón / Violant of Hungary (F12775)
m. 8 Sep 1236Pedro II, King of Aragón (1174-1213) 
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Marie of Montpellier ( -1213)
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| András II, King of Hungary (1176-1235)
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| Yolanda of Courtenay, Queen Consort of Hungary (1200-1233)
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| James I, King of Aragón (1208-1276)
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| Violant of Hungary ( -1251)
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Yolande of Aragón (1237-1301)  |
| Pedro III, King of Aragon; King of Sicily (1240-1285) |
| Isabella of Aragon, Queen Consort of France (1243-1271) |