Nielsen Hayden genealogy
Family: St. Louis IX, King of France / Margaret of Provence, Queen Consort of France (F4443)
m. 27 May 1234Louis VIII, King of France (1187-1226) 
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Blanche of Castile, Queen Consort of France (1188-1252)
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Robert of France (1216-1250)  |
| Charles I Etienne, King of Naples and Sicily (1226-1285) |
| Raymond Berenger (1195-1245)
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| Beatrice of Savoy ( -1266)
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| Sancie of Provence ( -1261) |
| Beatrice de Provence (1234-1267) |
| St. Louis IX, King of France (1214-1270)
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| Margaret of Provence, Queen Consort of France (1221-1295)
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| Philippe III, King of France (1245-1285) |
| Robert of France (1256-1318) |
| Agnes of France (1260-1325) |