Nielsen Hayden genealogy
Family: Fernando IV, King of Castile / Costanza of Portugal (F13169)
m. Jan 1302
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Sancho IV, King of Castile and León (1258-1295)
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Maria de Molina (1262-1321)
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Beatriz of Castile (1293-1359)  |
| Diniz, King of Portugal (1261-1325)
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| St. Isabel of Portugal (1271-1336)
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| Afonso IV, King of Portugal (1291-1357) |
| Fernando IV, King of Castile (1285-1312)
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| Costanza of Portugal (1290-1313)
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| Alfonso XI, King of Castile and Leon (1311-1350) |