 The Bay of Valparaíso was probably first populated by the Picunche natives, known for their agriculture, or the Chango people, who were nomads dedicated to fishing, and traveling between modern-day Caldera and Concepcion.Spanish explorers, considered the first European discoverers of Chile, arrived in 1536, aboard the "Santiaguillo", a supply ship sent by Diego de Almagro.The "Santiaguillo" carried men and supplies for Almagro's expedition, under the command of Juan de Saavedra, who named the town after his native village of Valparaíso de Arriba in Cuenca Province, Spain.