I want to know the answer to the following question:
Which powerful Galician lords did they murder?
All the background I'm provided with is that "The modern period of the kingdom of Galicia began with the murder or defeat of some of the most powerful Galician lords, such as Pedro Álvarez de Sotomayor, called Pedro Madruga, and Rodrigo Henriquez Osorio, at the hands of the Castilian armies sent to Galicia between the years 1480 and 1486.". Is that enough to answer the question?
Answer: yes