In a document written in the 17th century by Cardinal Gerónimo de él Hoyo it states that Cereixo was destroyed by what he called the “English heretics” and some of the locals went on to found the village of Muxía after requesting authorisation from the monastery of Moraime to build on some of its land. Although the text is from well after the event, it surely refers to a Norman attack, the precise date of which is unknown.
Danger comes by sea. The sea has always been a source of wealth and a means of spreading innovation, but it is also the bringer of plagues and destruction. In the middle ages, between the 10th and 12th centuries the coast was a dangerous place, often marauded by Vikings, also called Normans in these parts, and Saracen pirates.
The Ría of Camariñas and Cereixo was the scene of such attacks. One document, dating from 968, tells of how the monks of Santa María de Cabo Tosto (Camariñas) had to flee to Santiago because of the incursions by Saracen pirates. And in the “Historia Compostelana” there is mention of the devastation caused at the beginning of the 12th century by Nemancos and Soneira, the Almoravid pirates that lived along the coast between Seville and Coimbra.