[2] Old accounts tell that in 999, in a year of change in the kingdom of León, when Bermudo II died and Count Mendo Gonçalves of Portugal became regent of the young Afonso V of León, a landing of Christians took place at the mouth of the Douro, commanded by Monio Viegas, the supposed founder of the Ribaduriense (or Gascan) lineage, who was said to have originated in Gascony.
[3][4] This information may be credible, but in a donation that Garcia Moniz made in 1068 to the King of Galicia, it refers to goods that he had inherited from his grandparents, so that these, the supposed parents of the “founder from Gascony” already had control in Ribadouro, and so Monio did not conquer such control, but inherited it, and therefore could not come from Gascony, as he was a native of Portugal, probably from a Portuguese place called Gasconha (or Casconha in the current municipality of Paredes).
[2] Near the monastery he defeated a Muslim host, by means of a promise made during the battle of Valboa, where he captured the castle of Monte de Arados.
[8] The territory where the Monastery was located had favorable conditions for monastic life, since it was rugged and therefore rarely visited by pilgrims and other travelers.
In the following centuries, the Monastery and the surrounding lands would be linked to several descendants of Monio, with properties in Vila Boa do Bispo or in the territory of the current parish.