Agustín de Ahumada (1527–1591)[1] was a Castilian military officer who took part in the Arauco War.
His elder sister Teresa became a Carmelite mystic nun (and was eventually canonized as a Catholic saint).
He fought in Chile against the Mapuche and earned fame when in 1566 he was entrusted with the defense of the Plaza of Cañete with only limited resources.
The Mapuche, aware of the camps frailties, got a considerable number together under the orders of their leaders Loble and Millalelmo.
Captain Cepeda found out from friendly Mapuche that his enemy was advancing on the plaza, and so he locked up his people, his livestock and his horses in the fort that they had at the edge of the river, and got in position to defend himself there until he received help to take the offensive.