Louis XIV Has a Second Son (Who Survives)

Rather surprised that a search turns up zip on this matter, but it's something I've found myself wondering of late:

Louis XIV had three legitimate sons by his queen:

  • Louis le Grand Dauphin (1661-1711)
  • Philippe Charles, Duc d'Anjou (1668-1671)
  • Louis François, Duc d'Anjou (1672-1672)
We all know how the build-up to the Spanish succession went, and how messy it got for all involved, especially when the Allies started worrying about a possible Franco-Spanish union after the deaths of three dauphins and a dauphine in a row in 1711/1712 moved Philip V anxiously closer to the French throne.


But, what if Le Roi Soleil has a second son to survive, (maybe the older of the dukes of Anjou?) and the dauphin still marries and multiplies as OTL, then even if the events of 1711/1712 still occur, the Spanish claimant is not only LXIV's son/grandson, but further removed from the French throne than Philip V was.


How might history play out if one of the Anjous doesn't die?
 
Assuming Louis XIV's wife, Maria Theresa (older sister of Carlos II of Spain) is already dead as in OTL (she died in 1683), either Philippe Charles or Louis François would become the new King of Spain with the following provisions:

  • They renounce their rights to the French throne (as per OTL)
  • The Bourbon-Orléans are the heir presumptives to the French throne should the direct Bourbon line die out
  • Salic Law is not to be imposed in Spain (It wasn't necessary and the only thing it did was to cause civil wars in Spain a century or so later)
 
Assuming Louis XIV's wife, Maria Theresa (older sister of Carlos II of Spain) is already dead as in OTL (she died in 1683), either Philippe Charles or Louis François would become the new King of Spain with the following provisions:

  • They renounce their rights to the French throne (as per OTL)
  • The Bourbon-Orléans are the heir presumptives to the French throne should the direct Bourbon line die out
  • Salic Law is not to be imposed in Spain (It wasn't necessary and the only thing it did was to cause civil wars in Spain a century or so later)
OTL King Philip V of Spain if he isn't butterflied becomes regent of France most likely.
Seeing his OTL virility,the Orleans might not get the throne.
 
Might we see a reverse Apollinis et Dianae situation, with the duc d'Anjou perhaps marrying Maria Antonia of Austria in order to cement their kid's rights to the Spanish throne?
 
Might we see a reverse Apollinis et Dianae situation, with the duc d'Anjou perhaps marrying Maria Antonia of Austria in order to cement their kid's rights to the Spanish throne?

The point is who while Maria Antonia was the heiress presuntive to the Spanish Crown for all her life legally the French had not right to the Spanish Crown or its possesions because both the princesses of Spain who married in France (Louis XIV's mothernd wife) renounced to their rights to spanish crown in their wedding contracts. Louis XIV in the end used the fact who his wife exagerated dowry was never fully paid and said who that dowry was the compensation for his wife renounce of her successions' rights so without the full payment of the dowry the renounce was not valid and so their descendants had right to be heirs to the Spanish Crown
 
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