Enrique IV el Impotente's son

In my recent reading on pre-united Spain, I found that Enrique the Impotent, king of Castile, had two children by his second wife - the famous la Beltraneja and a stillborn son. Now, if the son had not been stillborn would it have scuppered the rumors of infidelity so stressed by La Beltraneja's opponents to claim she was illegitimate?
 
In my recent reading on pre-united Spain, I found that Enrique the Impotent, king of Castile, had two children by his second wife - the famous la Beltraneja and a stillborn son. Now, if the son had not been stillborn would it have scuppered the rumors of infidelity so stressed by La Beltraneja's opponents to claim she was illegitimate?

Doubt it. Male or female, it won't matter if most of the nobility believes the King to be impotent. Though I'd imagine that a son would have more support among the nobility then la Beltraneja did, considering that his marriage wouldn't lead to Castile being a lesser partner in union with Portugal.
 
Doubt it. Male or female, it won't matter if most of the nobility believes the King to be impotent. Though I'd imagine that a son would have more support among the nobility then la Beltraneja did, considering that his marriage wouldn't lead to Castile being a lesser partner in union with Portugal.

Would a personal union have taken place, though? Since Alfonso already had children from his first marriage. Therefore, Castile would've never ACTUALLY been in personal union with Portugal, unless Joao II's son still doesn't know how to swim, since when Alfonso V dies, Portugal goes to Joao II, and Castile is inherited by his child(ren) with La Beltraneja.

On the other hand, El Beltranejo? could marry Ferdinand and Isabel's eldest daughter, removing the possibility of the Castilian groom who was with Prince Alfonso when he died.
 
Well, 1468/69 is still a far way away from Joao II dying without heirs. If his son is still in need of a wife there is still any of the sisters of Isabel, princess of the Asturias, and Elizabeth of York who was proposed for Manuel I at a time, as well as OTL princess of the Asturias, Margaret of Austria.
 
I've always had a soft spot for Elizabeth of York marrying someone else besides Henry Tudor. Her becoming queen of Portugal makes for an interesting possibility.
 
Well, marrying the son of Enrique IV (let's call him Juan III?) to a daughter of Isabel is basically a reversal of the Catholic Monarchs' offer to marry La Beltraneja to their prince of the Asturias.

However, the son is still going to be in need of a regency (I think, not sure on majority age in Castile at the time), since he would be born 1462, Enrique died in 1474 (i.e. he'd be 12). His mother - the usual choice for regent is exiled and disgraced; his uncle, Alfonso, is dead since 1468 (reportedly poisoned by his sister-in-law; unless the death if butterflied away); and his aunt, Isabel, is married into an enemy kingdom.
 
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