Ursúa, Pedro de, 1526-1561

Pedro de Ursúa (1526 –January 1, 1561) was a Spanish conquistador from Baztan in Navarre. He is best known for his final trip with Lope de Aguirre in search for El Dorado, where he was assassinated in a plot by a fellow officer. He was born in Arizkun, Baztan, to a Beaumont family who supported the Spanish occupation of Navarre, benefiting directly from the Navarrese loyalist defeat at Amaiur in July 1522. In Panama, Ursúa subdued a Cimarron (ex-slave) revolt by tricking Cimarron leader Bayano into coming unprepared to negotiate a truce. He then captured Bayano and sent him back to King Philip II of Spain. Together with Ortún Velázquez de Velasco, Pedro de Ursúa founded the city of Pamplona, New Kingdom of Granada, on November 1, 1549. Ursúa later searched the Amazon region for El Dorado with Lope de Aguirre. When Ursúa would not allow Aguirre's mistress on the expedition, Aguirre conspired with another officer, Fernando de Guzmán, to use this rejection as a pretext to start a riot in which they assassinated Ursúa and seized power.