CACERES, Alonso de (cah'-the-res), Spanish soldier, born in Palos, Huelva, in 1499; died in Arequi-pa, Peru, in 1554. He went to Santo Domingo in 1519, and took part in several expeditions, conquered, with Pedro de Heredia, the province of Cartagena, and was alcalde of its capital in 1534. In the following year he was present at the discovery of Cenfi, and assisted Alonso de Heredia, whose expeditionary forces were in distress. He then undertook the conquest of Tolu and the discovery of Urute, but was unsuccessful, and left Cartagena for Peru about 1539. He accompanied Vaca de Castro at the battle of Chupas, and sided with the royalists during the revolts promoted by Gonzalo Pizarro, who, on his entering Lima after his victories, directed the imprisonment of Caceres. Afterward he became friendly with Pizarro, but left his army during the battle of Inaquito, and again joined the king's troops. He also assisted in several conquests in lower Peru or Bolivia in 1550.