Viseu Travel on He accused Pizarro of duplicity in gaining most titles for himself. Almagro was granted a governorship of land south of Peru, but when he marched there, he was disappointed that it seemed to contain no treasure. He was unaware that his territory included Potosi, where the Spaniards would soon discover the world’s richest silver mine. So Almagro claimed Cuzco. Peru’s conquerors were soon fighting one another with as much savagery as they had shown in butchering the Indians. The war ended with Almagro’s defeat by Pizarro’s brother Hernando, at Cuzco in 1538. The arrogant and coarse Hernando executed 120 of Almagro’s men, then condemned Almagro as a traitor and killed him. Viseu Travel 2016.