I want to know the answer to the following question:
Which two royals were part of the dynastic conflict of the 15th century?
All the background I'm provided with is that "On the other hand, the lack of an effective royal justice system in the Kingdom led to the social conflict known as the Guerras Irmandiñas ('Wars of the brotherhoods'), when leagues of peasants and burghers, with the support of a number of knights, noblemen, and under legal protection offered by the remote king, toppled many of the castles of the Kingdom and briefly drove the noblemen into Portugal and Castile.". Is that enough to answer the question?
Answer: no