What if Juana I of Castile had married another man and managed to rule alone?

[dk900]

It is known that Juana was not crazy, and was an intelligent and competent woman.
Without the toxic relationship with her husband, father and son, Castile's history would have been very different.
Would she inherit Aragon (Ruled by the salic law) and unify Spain?
What would be the agenda of Spain without the Habsburgs?
And most importantly, in the long run, would this timeline have been better for the future and development of Spain?

 

[kasumigenx]

It is known that Juana was not crazy, and was an intelligent and competent woman.
Without the toxic relationship with her husband, father and son, Castile's history would have been very different.
Would she inherit Aragon (Ruled by the salic law) and unify Spain?
What would be the agenda of Spain without the Habsburgs?
And most importantly, in the long run, would this timeline have been better for the future and development of Spain?

She can marry Manuel in 1495.

 

[Tempered Zen]

It is known that Juana was not crazy, and was an intelligent and competent woman.
Without the toxic relationship with her husband, father and son, Castile's history would have been very different.
Would she inherit Aragon (Ruled by the salic law) and unify Spain?
What would be the agenda of Spain without the Habsburgs?
And most importantly, in the long run, would this timeline have been better for the future and development of Spain?

There's a general consensus that no Habsburgs is ultimately better for Spain, as they don't have to waste coin fighting wars in Europe and can focus on holding territories abroad. A Spanish conquest of North Africa is a popular outcome of this scenario. A marriage with the King of Portugal (along with an eventual personal union), as suggested by @kasumigenx , would also greatly benefit both kingdoms.

 

[isabella]

It is known that Juana was not crazy, and was an intelligent and competent woman.
Without the toxic relationship with her husband, father and son, Castile's history would have been very different.
Would she inherit Aragon (Ruled by the salic law) and unify Spain?
What would be the agenda of Spain without the Habsburgs?
And most importantly, in the long run, would this timeline have been better for the future and development of Spain?

Juana can marry Manuel in place of Isabella if John II of Portugal die before the starting of the negotiations for the double wedding with Austria AND Manuel accept the exchange (in that case Isabella will take the veil as as she wished and Maria will be offered as bride for Philip being the only daughter still available).
Juana is likely to stay happier and is possible who her trouble with religion (who were the main reason for which everyone in Castile’s government had followed Ferdinand’s plan to remove Juana calling her crazy) will not reach the OTL level if she is kept away from the Burgundian court.
Juana was not mad but the fact who she was not the fanatic religious who her mother was and her refute to let rule her life by her confessor and the church made her practically an heretic in the eyes of Isabella and her advisors and gave to Ferdinand the chance to exclude her from government.
[Naturally Juana was in no way an heretic but she had a lukewarm vision and practice of religion and was not a fan of Inquisition]

 

[Ivan Lupo]

Juana can marry Manuel in place of Isabella if John II of Portugal die before the starting of the negotiations for the double wedding with Austria AND Manuel accept the exchange (in that case Isabella will take the veil as as she wished and Maria will be offered as bride for Philip being the only daughter still available).
Juana is likely to stay happier and is possible who her trouble with religion (who were the main reason for which everyone in Castile’s government had followed Ferdinand’s plan to remove Juana calling her crazy) will not reach the OTL level if she is kept away from the Burgundian court.
Juana was not mad but the fact who she was not the fanatic religious who her mother was and her refute to let rule her life by her confessor and the church made her practically an heretic in the eyes of Isabella and her advisors and gave to Ferdinand the chance to exclude her from government.
[Naturally Juana was in no way an heretic but she had a lukewarm vision and practice of religion and was not a fan of Inquisition]

This is also an extremely plausible way to unify Portugal with Castile and Aragon finally, since Juana and Manuel's eventual son is due to inherit all 3 crowns. Eventually, Fernando's longtime ambition to conquer Navarre will be fulfilled and the entire Iberian Peninsula is unified by an Aviz/Trastámara dynasty that now will exist in a world where the Habsburg brothers, Charles and Ferdinand are butterflied away in favor of the children of Philip and Maria, who will all be raised in the Burgundian Netherlands entirely and might not be able win the marriage inheritance lottery like Juana's boys did. And I imagine Catalina still marries Arthur Tudor.

 

[isabella]

This is also an extremely plausible way to unify Portugal with Castile and Aragon finally, since Juana and Manuel's eventual son is due to inherit all 3 crowns. Eventually, Fernando's longtime ambition to conquer Navarre will be fulfilled and the entire Iberian Peninsula is unified by an Aviz/Trastámara dynasty that now will exist in a world where the Habsburg brothers, Charles and Ferdinand are butterflied away in favor of the children of Philip and Maria, who will all be raised in the Burgundian Netherlands entirely and might not be able win the marriage inheritance lottery like Juana's boys did. And I imagine Catalina still marries Arthur Tudor.

Well Maria’s son will inherit both Austria and Burgundy and will likely have the chance to marry Anne of Bohemia and Hungary (and possibly inheriting Milan if the Sforzas still go extinct).

Catalina will marry Arthur as they were already engaged at this point