WI: Edward V marries La Beltraneja

Is it possible for Edward V to marry Joanna La Beltraneja of Castile if he survives in order to get rid off her from the Castilian succession?
 
Not at all. Joanna's ambitions and hopes were entirely centered in Iberia; leaving for a far-off kingdom already entrenched in it's own internal and external issues makes no sense. Furthermore, for Edward V there's no profit in marrying a very likely bastard daughter of a dead king instead of the Duchess of Brittany.
 
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