Pedro’s half-brother, Henry of Trastámara, played a significant role in the tumultuous history of Castile. Born to Pedro’s father, Alfonso XI, and his mistress, Eleanor of Guzman, Henry grew up in the shadow of his royal siblings.

Despite his noble lineage, Henry’s upbringing was marked by adversity and marginalization. He resented Pedro’s privileged position and the favoritism shown towards their legitimate siblings. Henry’s discontent simmered beneath the surface, fueling his ambition to challenge Pedro’s rule. He sought allies among disaffected nobles and discontented factions within Castilian society.

Pedro’s half-brother, Henry of Trastámara

In 1350, Pedro’s ascension to the throne further exacerbated tensions between the half-brothers. Henry’s ambitions clashed with Pedro’s authoritarian tendencies, setting the stage for a bitter rivalry.

The turning point came with the outbreak of the Castilian Civil War in 1356. Henry seized the opportunity to challenge Pedro’s authority, rallying support for his cause and garnering allies both within and outside Castile.

Henry’s military prowess and strategic acumen proved instrumental in the conflict, as he employed guerrilla tactics and forged alliances with foreign powers to undermine Pedro’s forces.

The culmination of the civil war came in 1369 with the decisive Battle of Montiel, where Henry emerged victorious. Pedro was captured and executed, allowing Henry to ascend to the throne as Henry II of Castile.

Henry’s reign marked a new era for Castile, characterized by stability and reform. He sought to consolidate his power and establish his legitimacy as the rightful ruler, earning the respect of his subjects.

Despite his initial struggles and the challenges he faced, Henry of Trastámara succeeded in uniting Castile under his rule and laying the foundation for a period of relative peace and prosperity in the kingdom.