Columbus: The Four Voyages, 1492-1504
ruthless prescription for the exercise of power. More tellingly, João II earned the sobriquet “The Tyrant,” a violent despot who was despised and envied by his nobles. To cite but a few instances of his arbitrary exercise of power, he ordered all those with castles to submit their titles to the crown for confirmation, which could be granted or withheld. He dispatched representatives of the crown to supervise the nobles’ administration of their estates. And he presided over the abolition of bureaucratic offices that gave the nobility jurisdiction over the legal affairs of their districts. That was just the beginning. He gutted two of the most powerful Portuguese dynasties, the house of Viseu and the house of Braganza. The Braganzas were the largest landowners in all of Portugal, and Fernando II, the Duke of Braganza, controlled a private army of ten thousand men and three thousand horses. The Duke of Viseu was, among his many other titles, estates, and offices, the lord of Portugal’s newly established offshore outposts of Madeira Island and the Azores, and as such posed an obstacle to the crown’s imperial aspirations.
    In the first instance, João II rocked his kingdom by executing a potential rival for the throne, Fernando II of Braganza. In this case, letters had come to light showing a subversive liaison between Fernando II and the sovereigns of Spain, Ferdinand and Isabella. The Duke of Braganza was quickly seized, put on trial for treason, and after the inevitable guilty verdict, beheaded. Later, the Braganza estates were confiscated, and the surviving members of the dynasty fled to the kingdom of Castile for safety. Soon after, João II turned his attention to another perceived enemy, concluding that his cousin, Infante Diogo, Duke of Viseu, planned to overthrow him. In this case, he dispensed with a trial and personally stabbed him to death. What made the death all the more shocking was that their families were related; João II’s wife was Leonor of Viseu.
     
    T his was the lethal milieu into which Columbus stumbled. Although he had begun to master the sea, and proved himself fearless in command of a ship, he had a lot to learn about people, power, and politics. He could plot a course with ease, but lacked the ability to flatter a king. The title of a chapter chosen by his son Ferdinand for a biography of the Admiral reflected Columbus’s self-centered approach: “How the Admiral Grew Angry with the King of Portugal, to Whom He Had Offered to Discover the Indies.” To anyone familiar with the Portuguese court, to say nothing of navigation, this statement was outrageous. One did not dare to grow angry with this king, who was prone to sudden violence. Nor did one offer to “discover the Indies,” as if that were a straightforward demand. One humbly petitioned for backing to attempt a voyage of exploration in the king’s name. And of course Columbus never did fulfill his proposed objective. As deft and decisive on the water as he was clumsy and awkward on land, he urged the king to see things his way, to approve a sea route to Asia, but João stubbornly looked to other explorers and to the east rather than the west. Diogo Cáo won his backing to explore central Africa in 1482, and five years later, Bartolomeu Dias rounded the Cape of Good Hope in the name of Portugal.
     
    C olumbus spent eight years in Lisbon trying to make his vision of exploration a reality, and records of his time there are sketchy, when they exist at all. The Lisbon earthquake of November 1, 1755, destroyed records and other priceless artifacts pertaining both to him and to much of Lisbon’s history. A few particulars survive, however. The first was his allusion—in the pages of the diary of the first voyage—to his participation in the thriving Portuguese slave trade. The Portuguese were the first Europeans to arrive on Africa’s west coast, Guinea, and the explorer Antão Gonçalves became the first Portuguese to buy slaves

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