Wikipedia
Penco
Penco ( Mapudungun: " Peumo water") is a Chilean city and commune in Concepción Province, Bío Bío Region on the Bay of Concepción. Founded as the city of Concepción del Nuevo Extremo on February 12, 1550 by Pedro de Valdivia, it is the third oldest city in the country after Santiago founded first in 1541 and La Serena second in 1544.
To an outsider, there may be confusion between the demonyms of the inhabitants of Concepción and Penco. Due to the previous location of Concepción, inhabitants of that city are called penquistas while inhabitants of Penco are known as pencones.