The Barros family has grown Albariño grapes since the 1970s. At that time the Regulatory Council had not been formed and grape production was done informally on tiny plots of land.

José Barros planted 100,000 m2 of vines, which at that time was one of the most decisive commitments to the Albariño variety as well as one of the largest vineyards in Galicia.

After the creation of the Denomination of Origin, the winery was founded under the name Maior de Mendoza, after a family's commitment to a land and its history, as Lady Maior de Mendoza was the wife of Fernando Mariño de Lobera Monterrei y Soutomaior who, among other titles, held that of Lord of Trabanca after which the location of the bodega is named.