WI: All of King Edward I's sons survive?

Was just looking through this again, and was wondering what would each son's title be?

John would be Earl of Chester as heir to the throne, but what about Henry, Alphonso and Edward?

Also considering John was born in 1266, technically he'd be of age to fight in Wales
 
For John, I think he could marry Joan of Navarre instead, butterflying the existence of Isabella..

Hmm interesting, in otl, his brother Henry was betrothed to Joan of Navarre, so John would also be King of Navarre in right of his wife?

Furthermore, butterflying away Louis, Philip and Charles as well
 
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