Tuhia he haere tonu mō tēnei wāhanga - He tino piri a Fadrique ki ngā Kīngi Katorika. I whawhai tōna pāpā i te Pakanga o te Wharenga o Castile
i te taha o te Kuini a muri ake nei a Isabella I o Castille ki tana taina wahine a Juana la Beltraneja, a ko tana whaea te tuahine iti o Juana Enríquez y Fernandez de Cordoba, ko ia te whanaunga tuatahi o Ferdinand II o Aragon.