Among the municipalities of Teo, Rois and Brión is the Francos or Lupario hill fort, the mansion of the perfidious Queen Lupa, to whom the disciples of the Apostle would go in search of a place to bury the lifeless corpse of their master. Queen Lupa, queen of the wolves, the Moorish queen, the legendary character who resisted the introduction of Christianity in Galicia linked to the Xacobean legends, brings together in her persona a complete imaginary with a deep imprint on our municipality. 

The historian, Mauro Castellá Ferrer, speaks of this queen’s abode, in a castle that could hold four thousand men, surrounded by a thick wall. A castle on a “high hill two leagues from Iria, close to Francos”. 

The canon of the Santiago de Compostela Chapter and researcher A. López Ferreiro, in his study of the monuments related to the Xacobean cult of the late 19th century, tells us of a horseshoe-shaped hill fort, with two enclosures surrounded by walls and a central area - the so-called Eira dos Mouros - where the remains of a now-defunct rectangular building were preserved, possibly a mediaeval tower, and we can associate with the so-called Sixto Tower, of which Father. Juan de Azcona also spoke back in 1532 ("between the road of Padrón and of Santiago there is a tower they call Sisto, or Sancto Antonino, along with a place they call Franco, where it is said that Queen Lupa dwelt").  López Ferreiro asserts that the castle was the capital of the Amaeos, the ancient inhabitants of the lands of the Maía Valley.