Expedition to Chile In April 1539,
Francisco Pizarro authorized
Pedro de Valdivia as his lieutenant governor with orders to conquer
Chile. That did not include monetary aid, which he had to procure on his own. Valdivia did so, in association with the merchant Francisco Martínez Vegaso, captain Alonso de Monroy, and Pedro Sanchez de la Hoz. Sanchez was the longtime secretary to Pizarro, who had returned from Spain with authorization from the
king to explore the territories south of the
Viceroyalty of Peru to the
Strait of Magellan, also granting Valdivia the title of governor over lands taken from the indigenous people. This was the last campaign for the Spanish in Chile. expedition to southern Chile in 1544. Valdivia came to the Valley of
Copiapo and took possession in the name of the
King of Spain and named it
Nueva Extremadura, for his Spanish homeland of
Extremadura. Arriving in central Chile, Pedro de Valdivia was confronted by the toqui
Michimalonco, who a couple of years before had expelled the
Incas from the northern parts of the Mapuche lands. The Spanish and Mapuche faced each other in the Battle of Mapocho, in which Valdivia was victorious. Michimalonco decided to make a tactical retreat to gather more contingents and to expel the Spanish invaders with a surprise attack, but the Spanish learnt of this accumulation of forces and decided to head for where the Mapuche were accumulating for their surprise attack and at the Battle of Chillox, Michimalonco was defeated again. The resounding victory left Pedro de Valdivia confident. On February 12, 1541, he founded the city of
Santiago de la Nueva Extremadura on
Huelen hill (present-day Santa Lucia Hill). After a few months of settlement, Pedro de Valdivia gathered his forces and went directly to attack the fortress of Michimalonco in Paidahuén, leading to the battle of Paidahuén where the Mapuches were completely defeated and Michimalonco taken prisoner. To obtain his freedom, Michimalonco offered the Spanish the ownership of the
Marga Marga gold pans, belonging to Michimalonco since his expulsion of the Incas. With this, Michimalonco and his imprisoned men were released and Michimalonco set some of his vassals to work for the Spanish in their exploitation of the gold.
Governor Valdivia had rejected the position and titles due him while Pizarro was alive, as it could have been seen as an act of treason. He accepted the titles after the death of
Francisco Pizarro. Pedro de Valdivia was named Governor and Captain-General of the
Captaincy General of Chile on June 11, 1541. He was the first Governor of Chile. For long time Valdivia was preoccupied about other Spanish conquistadors disputing him what he saw as his domains. As long as he did not have a royal assignment this could very much happen. At the time of the initial contact Mapuches called horses "hueque ingas" in reference to the
hueque according to Valdivia's letter to the Emperor. ==Aspects of the Spanish conquest==