It is bordered to the north by the municipalities of Curtis and Oza-Cesuras; to the west by Mesía, to the east with Sobrado and to the south with Boimorto.

This last one may have its origin in the Suevian era, because the church retains two capitals of the sixth or seventh centuries and appears in Latin documents as monastery of Mosontio.

In the middle of the tenth century, Pedro de Mezonzo, who became the abbot of the convent and bishop of Compostela, joined him.

In 1938, the mayor of Vilasantar and neighbor of Présaras, Antonio Iglesias Corral, was executated in Miraz, Friol.

[5][6] In the years following the war, the Guerrilla Army of Galicia took some actions in the municipality, as well as the mythical Foucellas, who acted in the area and lived a time hidden in the house of his cousin in Ru, Vilasantar.