Analysis of information sources in references of the Wikipedia article "Joanna la Beltraneja" in English language version.
After nine months, occupied with frontier raids and fruitless negotiations, the Castilian and Portuguese armies met at Toro ... and fought an indecisive battle, for while Afonso was beaten and fled, his son John destroyed the forces opposed to him.
... in the ... battle of Toro, which, although of uncertain outcome, Ferdinand skilfully exploited for propaganda.