 A second (and permanent) settlement was established in 1580 by Juan de Garay, who sailed down the Paraná River from Asunción (now the capital of Paraguay).Garay preserved the name chosen by Mendoza, calling the city "Ciudad de la Santísima Trinidad y Puerto de Nuestra Señora la Virgen María de los Buenos Aires" ("City of the Most Holy Trinity and Port of Saint Mary of the Good Airs").The short form "Buenos Aires" became the common usage during the 17th century.