Blanche of Portugal (1259%E2%80%931321)

Blanche of Portugal , was an infanta, the firstborn child of King Afonso III of Portugal and his second wife Beatrice of Castile. Named after her greataunt Blanche of Castile, queen of France, Blanche was the Lady of Las Huelgas, MontemoroVelho, Alcocer and Briviesca, the city which she founded.

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Source: Wikipedia