The Battle of Mataquito was fought in the Arauco War on April 30, 1557, between the forces of the Spanish governor, Francisco de Villagra, and Mapuche headed by their toquiLautaro. It was a surprise attack, carried out at dawn, on Lautaro's fortified camp between a wooded mountain and the shore of the Mataquito River.[7] The battle is notable for ending Mapuche designs on Santiago, while also avenging the death of former governor Pedro de Valdivia, who had been killed by Lautaro's warriors four years earlier.
^Lobera, Historia de Chile Cap. XXII, no losses mentioned; Alonso Lopez de Larraigada, 500 killed; Vivar, Crónica Capítulo CXXIX, Lautaro another captain and 250 warriors killed; Marmolejo Historia, Cap. XXII "more than three hundred Indians died in this assault with many others wounded or surrendered": Roslaes, Cap. X "six hundred Indians, with many wounded who went to die to their land"
^The location of this battle is uncertain and the location of the Mataquito camp has been confused with Lautaro's 1556 Peteroa fortress.
According to Vivar, Crónica, CXXIX, the 1557 battle was fought at a location three leagues from the province of Gualemo where Francisco de Villagra with seventy men met Juan Godíñez prior to their night march on the Mataquito camp. A soldier in this campaign and the battle, under Juan Godíñez, Alonso Lopez de la Raigada, refers to Lautaro's 1556 fortress as "Peteroa" and the camp where Lautaro was killed as "Mataquito" and also refers to "Peteroa" and "Mataquito" as separate places (Medina, Colección de documentos inéditos, Información de senidos de Alonso López de la Eaigada). Lobera does not give a place name to the location of the 1556 fortress. He does call the place of the 1557 battle he took part in as being at the "lugar de Mataquito"; Capítulo LV. Marmolejo gives no place names to the location. A place along the north shore of the Mataquito River near the foot of the Cerro Chiripilco northeast of the town of La Huerta in Hualañé is believed to be the location of this camp and a monument was put up commemorating it.