A Different Louis X

Louis of France born in 1244, was the firstborn of the famous Saint Louis IX of France, he died in otl in 1260, and was succeeded as heir and later to the throne by his brother Philip, who became Philip III.

Now, Louis was betrothed to Berengaria of Castile who at the time was heir to the throne of Castile, before being displaced by her brother Ferdinand's birth. If Louis does not die in 1260, and instead lives on into adulthood, I suppose the chances of his marrying Berengaria are quite high.

This leads me to another query, if he is alive and is heir to the throne of France, who does his brother Philip marry? Does Philip marry Isabella of Aragon or a French nobleman's daughter, or someone closer to the French borders?

And, would Louis follow his father on the disastorous eighth crusade?
 
Louis of France born in 1244, was the firstborn of the famous Saint Louis IX of France, he died in otl in 1260, and was succeeded as heir and later to the throne by his brother Philip, who became Philip III.

Now, Louis was betrothed to Berengaria of Castile who at the time was heir to the throne of Castile, before being displaced by her brother Ferdinand's birth. If Louis does not die in 1260, and instead lives on into adulthood, I suppose the chances of his marrying Berengaria are quite high.

This leads me to another query, if he is alive and is heir to the throne of France, who does his brother Philip marry? Does Philip marry Isabella of Aragon or a French nobleman's daughter, or someone closer to the French borders?

And, would Louis follow his father on the disastorous eighth crusade?

Philip (III)'s engagement to Isabella was made prior to the death of his brother, so I expect the marriage to happen. That would be one of these genealogical oddities when the younger brother marries the aunt of his older brother's wife. If Fernando de la Cerda died as OTL, would *Louis X be dragged into a War of the Castilian Succession ?

As to the Crusade, no doubt. Louis IX was the kind of religious fanatic who cannot beginning to understand Christans asking themselves questions about the all Crusade business.
 
Philip (III)'s engagement to Isabella was made prior to the death of his brother, so I expect the marriage to happen. That would be one of these genealogical oddities when the younger brother marries the aunt of his older brother's wife. If Fernando de la Cerda died as OTL, would *Louis X be dragged into a War of the Castilian Succession ?

As to the Crusade, no doubt. Louis IX was the kind of religious fanatic who cannot beginning to understand Christans asking themselves questions about the all Crusade business.

Oh that's interesting, so that marriage goes ahead meaning we get a Philip the Fair and Charles Valois- I wonder what role they'd play in their uncle's court?- and I think he might well do so, to support his nephews against his brother in law. Would be interesting, as Edward I supported Sancho, so there's even more reason to get involved.
 
Oh that's interesting, so that marriage goes ahead meaning we get a Philip the Fair and Charles Valois- I wonder what role they'd play in their uncle's court?- and I think he might well do so, to support his nephews against his brother in law. Would be interesting, as Edward I supported Sancho, so there's even more reason to get involved.

At least, we would have the genetic potential for Philip the Fair and Charles de Valois, the men themselves being butterflied away. Many grandsons of James I of Aragon were great rulers, but it was also due to the transformations of the public administration and other intellectual technologies of the times.
 
At least, we would have the genetic potential for Philip the Fair and Charles de Valois, the men themselves being butterflied away. Many grandsons of James I of Aragon were great rulers, but it was also due to the transformations of the public administration and other intellectual technologies of the times.

This is very true, if the Sicilian Vespers occur, would Louis look to put his brother and sister in law on the Aragonese throne?
 
This is very true, if the Sicilian Vespers occur, would Louis look to put his brother and sister in law on the Aragonese throne?

I do not see any driver for a different fate. Philip may still know the same undignified death he had OTL. And the Pope would learn his power had limits, even when backed by the strongest Kingdom in the West.
 
I do not see any driver for a different fate. Philip may still know the same undignified death he had OTL. And the Pope would learn his power had limits, even when backed by the strongest Kingdom in the West.
Intriguing, could be part of the larger war of Castilian succession with England and France using Castile as a ground for their own moves
 
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