During the quarter-century following the conquest of the Aztec Confederacy in 1519–1521, Fernando Cortés, the major figure in that epic achievement of Spanish arms in the New World, acquired a great estate in central and southern México consisting of the tributes and labor services of populous Indian towns, extensive land holdings, mines, Indian and Negro slaves, and business enterprises. In 1529 Charles V conferred upon Cortés the title of Marqués del Valle de Oaxaca, and subsequently these properties and interests were collectively designated in colonial records as the Marquesado de Cortés. The Marquesado, which Cortés, with royal authorization, set up in 1535 as a mayorazgo, or entailed estate, was inherited at his death in 1547 by his legitimate son, Martín Cortés, born of his second marriage. Subject to various modifications and vicissitudes, the Estate remained in the hands of Cortés’ descendants during the entire colonial period.