Franco-Aragonese alliance in the Hundred Years War

I am making an alternate history about Joan of Arc since I am currently revising my Pax Italiana/La Pace Italiana since I had Martin of Sicily the Younger married to Mary of Anjou, the OTL wife of Charles VII of France, what if there was a Franco-Aragonese alliance instead because Martin of Sicily the younger survives and marries Mary of Anjou which would cause a French-Aragonese alliance, how would England fare in a Scottish-Aragonese-French alliance what would happen to England and Castile and if Isabella of Castile is born ITTL what would happen to her.
 
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IOTL Castile was allied with France.

Then, that would strengthen France's position in the Hundred Years War, this would mean England would have more enemies if they would start the Lancastrian war as in OTL, Portugal would not interfere because they might be annexed by Castile.
 

HJ Tulp

Donor
Then, that would strengthen France's position in the Hundred Years War, this would mean England would have more enemies if they would start the Lancastrian war as in OTL, Portugal would not interfere because they might be annexed by Castile.


I doubt France could be allied with both Castille and Aragon at the same time.
 
I doubt France could be allied with both Castille and Aragon at the same time.

I just think that Aragon and France would be allied if Martin II of Aragon and Sicily married Mary of Anjou and there will be no problem in Naples unless if Ladislaus of Naples survives, I think the Kingdom of Naples ruled by Ladislaus of Naples(if Ladislaus of Naples survives) and Portugal are possible English allies, the question is who would Castile would ally themselves into?
 
It happened indirectly during the 14th century because of Peter the Cruel of Castile's alliance with England. Both Aragon and France supported his brother Henry against him. So if Peter wins the civil war and his issue remains in the throne you have a Castile that is both aggressive and alligned with England instead of one alligned with France and weakened by internal conflict (caused by Henry's concessions to the nobles in order to gain their support). With that situation Aragon will have no choice but to side with France in order to ensure its survival.

Later than that, you have a Castile that is not an issue to Aragon, and an Aragon that has conflicts with France because of clashing interests in Italy, Navarre and the Roussillon.

And yeah, going by the first scenario neither Isabella nor Ferdinand will be born, so no need to worry about them.
 
It happened indirectly during the 14th century because of Peter the Cruel of Castile's alliance with England. Both Aragon and France supported his brother Henry against him. So if Peter wins the civil war and his issue remains in the throne you have a Castile that is both aggressive and alligned with England instead of one alligned with France and weakened by internal conflict (caused by Henry's concessions to the nobles in order to gain their support). With that situation Aragon will have no choice but to side with France in order to ensure its survival.

Later than that, you have a Castile that is not an issue to Aragon, and an Aragon that has conflicts with France because of clashing interests in Italy, Navarre and the Roussillon.

And yeah, going by the first scenario neither Isabella nor Ferdinand will be born, so no need to worry about them.

But most likely Naples might ally with England if the House of Anjou-Durazzo survives which has rivalry with the house of Valois this makes a possible Neapolitan-Castilian-English alliance.
 
I feel this Franco-Aragonese-Scotland allegiance would stop Henry V from warring with France, thus Gascony and Calais remain as Plantagenet(Lancaster) possessions for a longer time.
 
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