The genus name, like that of Araucaria, is derived from the Spanish exonym Araucanos ("from Arauco"), referring to the Mapuche people of Chile and Argentina who live in the surviving forests of Araucaria today.
He was elected alternate deputy for Concepción in 1831, but served instead as Senator for Biobío and Arauco from 1831 to 1846, as member of the Conservative Party.
Acanthogonatus patagallina is a mygalomorph spider of Chile, named after its type locality: Pata de Gallina, Arauco, Region VIII (Bío Bío Region).
After the defeat at the Battle of Tucapel, the Spanish had hurriedly reorganized their forces, reinforcing fort La Imperial for its defense and abandoning Confines and Arauco in order to strengthen Concepción.
After toqui Ainavillo's defeat in the Battle of Andalien he gathered tens of thousands of warriors from the Arauco and Tucapel regions to reinforce his depleted 15,000 man army for an attack on Valdivia's new settlement at Penco.
On 6 March 1866, during the Chincha Islands War, the Spanish steam frigate Blanca captured the Chilean sidewheel steamer Paquete de Maule in the Gulf of Arauco.
During his career, he was the provincial governor of Arauco, a member of the Chilean Chamber of Deputies, a government minister, and the Chilean ambassador to Venezuela.
Lebu River, located in the Arauco Province of the Biobio Region of Chile
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Lebu, Chile, a city and capital of the Arauco Province of the Biobio Region of Chile
President Aníbal Pinto named him Minister of the Interior, during which time he personally campaigned in the Arauco border to pacify a Mapuche rebellion and founded several forts to support the Malleco border.
Probably the toqui of the Arauco region, he commanded the Mapuche army of that area at the siege of Arauco from May 20 to June 30, 1562.
Milagros Cerrón Arauco was born on April 27, 2004, in Huancayo, Peru.