Historically, the settlement grew from the 9th century village, that became a centre of a Benedictine monastery, founded by Hermóigio, bishop of Tui. Labruja was a vicarage of the Sé of Braga, and also, at one time, the archdeaconship of the Sé of Tui. The Benedictine monastery of São Cristóvão de Labruja, was founded by the Bishop of Tui, Hermoígio, who ordered its construction on local lands (Bandeira) under the reign of the monarch Ordoño II of León. This king later donated the monastery to the Sé in Lugo, in 915. In 1125, Teresa transferred this title to the Sé in Tui. During the division of ecclesiastical lands on 1 December 1156, the churches of Cepões, Rendufe and half of Romarigães was transferred to the administration of Tui. In 1242, Lucas, Bishop of Tui, created the archdeaconship of Labruja, with its seat in the Sé and administration at São Cristóvão de Labruja.