WI: Ferdinand III of Castile Doesn't Die In 1252

According to Wikipedia, following the Battle of Las Navas de Tolosa, Ferdinand III was planning to invade the Almohad heartland in North Africa. However, Ferdinand III died in Seville on 30 May 1252, when a plague spread over the southern part of the Iberian peninsula while he was preparing his army and fleet to cross the Straits of Gibraltar. What if he hadn't succomed to the plague?
 
Top