Castile’s young new king immediately sets about…

Castile’s young new king immediately sets about subduing the towns supporting the monarchial Castilian count.

When Ferdinand’s father, King Alfonso IX of León, learns of his estranged wife Berengaria’s abdication in favor of her son, he invades Castile with the intention of unifying both kingdoms under his rule.

Finding scant support when the Castilian nobles flock instead to Ferdinand’s banner, he withdraws and reaches an amicable accord with his son, who retains the crown of Castile.