Out of curiosity, what effects might the survival of either Francisco I Febo, King of Navarre, or of his father (or both), the untimely-dying Gaston, prince de Viana have on the development of Navarre?
I read somewhere that if they had survived Navarre might've kept it's territories on both sides of the Pyrenees, and also that it would've most likely intervened on La Beltraneja's side in the War of the Castillian Succession.