[1] Its founding would not occur until 13 July 1059 by Dom Gomes Aciegas, and completed 1102; the remains of this original construction are two small chapels (below the main altar), the mail entrance door and the four fortified arches.

[1] From the Sousas, the monastery passed to the Melos and Sampaios (later under the protection of the Barbosa clan until the 11th century), represented by the Baron of Pombeiro de Ribavizela.

[1] By 1578, the monastery's porch continued to exist, but now badly damaged, and as friar João de S. Tomás later noted: "there were, by order, coats-or-arms erected to identify the anciente nobility there buried, that there would serve as judge".

[1] But, this did not limit the growth of the church and monastery, as major projects continued between the 16th and 18th century, with Jerónimo Luís being the principal contractor in 1600 constructing the two exterior towers.

Between 1770-1773, the retable was completed by friar José de Santo António Ferreira Vilaça, who also designed, the flourishments along the choir, the rosewood pews and the four chapels.

[1] After the 19th century, the church and monastery were progressively falling into ruin, after the Benedictine monks were expelled in 1834, and a significant part of the altar and construction stone were removed to support other projects within the region.

In January 1997, the Ministry of Culture (Portuguese: Ministério da Cultura) purchases the building and one of the parcels around the monastery (the consisted of a house and three lots).