The Celts had been taught by their priests that the soul is immortal. When the body died the spirit passed instantly into another existence in a country close at hand. We remember that the Otherworld of the British Isles, peopled by the banished Tuatha and all superhuman beings, was either in caves in the earth, as in Ireland, or in an island like the English Avalon. By giving a mortal one of their magic apples to eat, fairies could entice him whither they would, and at last away into their country.
In the Irish story of Nera (q. v.), the corpse of the criminal is the cause of Nera's being lured into the cave. So the dead have the same power as fairies, and live in the same place. On May Eve and November Eve the dead and the fairies hold their revels together and make excursions together. If a young person died, he was said to be called away by the fairies. The Tuatha may not have been a race of gods, but merely the early Celts, who grew to godlike proportions as the years raised a mound of lore and legends for their pedestal. So they might really be only the dead, and not of superhuman nature.
In the fourth century a. d., the men of England were hard pressed by the Picts and Scots from the northern border, and were helped in their need by the Teutons. When this tribe saw the fair country of the Britons they decided to hold it for themselves. After they had driven out the northern tribes, in the fifth century, when King Arthur was reigning in Cornwall, they drove out those whose cause they had fought. So the Britons were scattered to the mountains of Wales, to Cornwall, and across the Channel to Armorica, a part of France, which they named Brittany after their home-land. In lower Brittany, out of the zone of French influence, a language something like Welsh or old British is still spoken, and many of the Celtic beliefs were retained more untouched than in Britain, not clear of paganism till the seventeenth century. Here especially did Christianity have to adapt the old belief to her own ends.
Gaul, as we have seen from Cæsar's account, had been one of the chief seats of Druidical belief. The religious center was Carnutes, now Chartrain. The rites of sacrifice survived in the same forms as in the British Isles. In the fields of Deux-Sèvres fires were built of stubble, ferns, leaves, and thorns, and the people danced about them and burned nuts in them. On St. John's Day animals were burned in the fires to secure the cattle from disease. This was continued down into the seventeenth century.
The pagan belief that lasted the longest in Brittany, and is by no means dead yet, was the cult of the dead. Cæsar said that the Celts of Gaul traced their ancestry from the god of death, whom he called Dispater. Now figures of l'Ankou, a skeleton armed with a spear, can be seen in most villages of Brittany. This mindfulness of death was strengthened by the sight of the prehistoric cairns of stones on hilltops, the ancient altars of the Druids, and dolmens, formed of one flat rock resting like a roof on two others set up on end with a space between them, ancient tombs; and by the Bretons being cut off from the rest of France by the nature of the country, and shut in among the uplands, black and misty in November, and blown over by chill Atlantic winds. Under a seeming dull indifference and melancholy the Bretons conceal a lively imagination, and no place has a greater wealth of legendary literature.
What fairies, dwarfs, pixies, and the like are to the Celts of other places, the spirits of the dead are to the Celts of Brittany. They possess the earth on Christmas, St. John's Day, and All Saints'. In Finistère, that western point of France, there is a saying that on the Eve of All Souls' "there are more dead in every house than sands on the shore." The dead have the power to charm mortals and take them away, and to foretell the future. They must not be spoken of directly, any more than the fairies of the Scottish border, or met with, for fear of evil results.
By the Bretons of the sixth century the near-by island of Britain, which they could just see on clear days, was called the Otherworld. An historian, Procopius, tells how the people nearest Britain were exempted from paying tribute to the Franks, because they were subject to nightly summons to ferry the souls of the dead across in their boats, and deliver them into the hands of the keeper of souls. Farther inland a black bog seemed to be the entrance to an otherworld underground. One location which combined the ideas of an island and a cave was a city buried in the sea. The people imagined they could hear the bells of Ker-Is ringing, and joyous music sounding, for though this was a city of the dead, it resembled the fairy palaces of Ireland, and was ruled by King Grallon and his fair daughter Dahut, who could lure mortals away by her beauty and enchantments.
The approach of winter is believed to drive like the flocks, the souls of the dead from their cold cheerless graves to the food and warmth of home. This is why November Eve, the night before the first day of winter, was made sacred to them.
"When comes the harvest of the year
Before the scythe the wheat will fall."
Botrel: Songs of Brittany.