Acronym ARCHV
An archive under the Ministry of Culture of Spain, and is also part of Valladolid (Castilla and Leon).
Created by the Catholic Monarchs in 1489 and continuedwith the Real Audiencia y Chancillería de Valladolid (1371-1834), la Audiencia Territorial de Valladolid (1834-1989) and other institutions.
More information on the Spanish Wikipedia page [1].
The website, in Spanish, is [2]