Although the Serra da Capelada hoards polished stone tools over 4.000 years old who have become more remote testimony in what is known regarding the presence of man in this country, we have to go back to the eleventh century to certify the existence, on the edge of the sea, a place known as Cetaria. The same as, co time paso, would be the settlement of the present village of Cedeira. this arises, possibly, in the second half of the twelfth century and carries on her landlord a member of the powerful family of the county Lock. The power of the ecclesiastical institutions make their presence felt at the moment. A) Yes, vast tracts of land cedeiresa thicken heritage Monasteries Pedroso, Xubia, Sobrado and the Order of St. John of Jerusalem. later, in the thirteenth century, the same happens with Oseira Monastery. But, undoubtedly, the most significant is that even in the thirteenth century, the pier Cedeira already maintains relationships with other ports beyond the seas. For these dates, the village has a walled and, in the fourteenth century, notes the existence of a fortress. At which time the inhabitants of Cedeira go on to become vassals of the House of Lemos. A situation that will persist until the early years of the nineteenth century. Abundant documentation around the time of the Old Regime and, in this, can see the day to day society: the hard work of the farmers sailors, the eagerness of merchants and clerks, concerns clerics and noblemen; the anguish of the whole community before the enemies attacking by sea; as brotherhoods, religious festivals ...
In the eighteenth century there is a turning point. Stands the fort of the Conception in response to an attack chastened English and, meanwhile, the population grows, although youth Abadón the field to go with the Arsenal of Ferrol, where work was better paid.
THE first half of the nineteenth century turns fatal. Low population syntenic and the effects of the war of Independence. Fifteen parishes making up the jurisdiction cedeiresa, eight become part of other municipalities. Between them, St. John Moeche.
In the second half of that century can recover and opens new urban spaces, the sea shore. New work salting factories and cetareas. This upward trend is not arrested in the dawn of the twentieth century. New communication channels will approaching the old dirt roads. The village is illuminated and tourism makes his appearance.