MONTEMAYOR, Alonso de (mon-tay-mah-yet'), Spanish soldier, born in Seville late in the 15th century; died in Mexico in 1552. He came to Peru in 1532 with his friend Ahnagro, and accompanied him in 1536 to the conquest of Chili. In the battle of Salinas he was made a prisoner and kept long in confinement by Hernando Pizarro. After recovering his liberty lie came to Lima, when he heard of the ass:tssination of Francisco Pizarro in 1541, and joined the party of the younger Ahnagro, who sent him to Cotzcoto gain over the governor, Alvarez Holguin, but he was imprisoned by the latter and sent to Vaca de Castro. He was pardoned by Castro and fought for him against his former companions in the battle of Chupas, 15 September, 1542. On the arrival of the viceroy, Nunez Vela, in 1544, Montemayor was appointed captain, but fell into the hands of the forces of the audiencia opposed to the viceroy. Being discovered in the act of conspiring against the life of the oidores, or supreme judges, in favor of the viceroy, he was put to the torture, but, after recovering, fled and joined Nufiez Vela in Tumbez. He accompanied the latter in his unfortunate campaign, and in the battle of Aria-quite, 19 January, 1546, was taken prisoner by Gonzalo Pizarro, who pardoned him, but banished him to Chili. On the voyage he and his companions overpowered tire crew of the vessel, and sailed for New Spain, landing in Soconusco. He wrote a narrative of the events in Peru in which lie participated, published by Oviedo in his " Historia general y natural de las Indias."