As the devil is called in Scottish Gaelic the "Big Black Pig" and in Wales is associated with the "Black Sow of All Hallows", it may be that the Welsh had once their pig taboo too. The association of the pig with Hallowe'en is of special interest.
In Scotland the eel is still tabooed, although it is eaten freely in England. The reason may be that an ancient goddess, remembered longest in Scotland, had an eel form. Julius Cæsar tells that the ancient Britons with whom he came into contact did not regard it lawful to eat the hare, the domestic fowl, or the goose. In Scotland and England the goose was, until recently, eaten only once a year at a festival. The tabooed pig was eaten once a year in Egypt. It was sacrificed to Osiris and the moon. An annual sacrificial pig feast may have been observed in ancient Scotland. It is of special interest to find in this connection that in the Statistical Account of Scotland (1793) the writer on the parishes of Sandwick and Stromness, Orkney, says: "Every family that has a herd of swine, kills a sow on the 17th day of December, and thence it is called 'Sow-day'." Orkney retains the name of the Orcs (Boars), a Pictish tribe.
There are still people in the Highlands who detest "feathered flesh" or "white flesh" (birds), and refuse to eat hare and rabbit. Fish taboos have likewise persisted in the north of Scotland, where mackerel, ling,[191] and skate are disliked in some areas, while in some even the wholesome haddock is not eaten in the winter or spring, and is supposed not to be fit for food until it gets three drinks of May water—that is, after the first three May tides have ebbed and flowed.
The Danann deities of Ireland were the children of descendants of the goddess Danu, whose name is also given as Ana or Anu. She was the source of abundance and the nourisher of gods and men. As "Buanann" she was "nurse of heroes". As Aynia, a "fairy"[192] queen, she is still remembered in Ulster, while as Aine, a Munster "fairy", she was formerly honoured on St. John's Eve, when villagers, circulating a mound, carried straw torches which were afterwards waved over cattle and crops to give protection and increase.
A prominent Danann god was Dagda, whose name is translated as "the good god", "the good hand", by some, and as "the fire god" or "fire of god" by others. He appears to have been associated with the oak. By playing his harp, he caused the seasons to follow one another in their proper order. One of his special possessions was a cauldron called "The Undry", from which an inexhaustible food supply could be obtained. He fed heavily on porridge, and was a cook (supplier of food) as well as a king. In some respects he resembles Thor, and, like him, he was a giant slayer. His wife was the goddess Boann, whose name clings to the River Boyne, which was supposed to have had its origin from an overflowing well. Above this well were nine hazel trees; the red nuts of these fell into the well to be devoured by salmon and especially by the "salmon of knowledge". Here again we meet with the tree and well myth. Brigit was a member of the Dagda's family. Another was Angus, the god of love.
Diancecht was the Danann god of healing. His grandson Lugh (pronounced loo) has been called the "Gaelic Apollo". Goibniu was a Gaelic Vulcan.
Neit, whose wife was Nemon,[193] was a Fomorian god of battle. The sea god was Manannán mac Lir. He was known to the Welsh as Manawydan ab Llyr, who was not only a sea god but "lord of headlands" and a patron of traders. Llyr has come down as the legendary King Lear, and his name survives in Leicester, originally Llyr-cestre of Cær-Llyr (walled city of Llyr). His famous and gigantic son Bran became, in the process of time, the "Blessed Bran" who introduced Christianity into Britain.
Another group of Welsh gods, known as "the children of Don", resemble somewhat the Danann deities of Ireland. The closest link is Govannon, the smith, who appears to be identical with the Irish Goibniu. As Irish pirates invaded and settled in Wales between the second and fifth centuries of our era, it may be that the process of "culture mixing" which resulted can be traced in the mythological elements embedded in folk and manuscript stories. The Welsh deities, however, were connected with certain constellations and may have been "intruders" from the Continent. Cassiopea's chair was Llys Don (the court of the goddess Don). Arianrod (silver circle), a goddess and wife of Govannon, had for her castle the Northern Crown (Corona Borealis). She is, in Arthurian romance, the sister of Arthur. Her brother Gwydion had for his castle the "Milky Way", which in Irish Gaelic is "the chain of Lugh". The Irish Danann god Nuada has been identified with the British Nudd whose children formed the group of "the children of Nudd".
There were three groups of Welsh deities, the others being "the children of Lyr" and "the children of Don". Professor Rhys has identified Nudd with Lud, the god whose name survives in London (originally Cær Lud) and in Ludgate, which may, as has been suggested, have originally been "the way of Lud", leading to his holy place now occupied by St. Paul's Cathedral. Lud had a sanctuary at Lidney in Gloucestershire, where he was worshipped in Roman times as is indicated by inscriptions. A bronze plaque shows a youthful god, with solar rays round his head, standing in a four-horsed chariot. Two winged genii and two Tritons accompany him. Apparently he was identified with Apollo. The Arthurian Lot or Loth was Lud or Ludd. His name lingers in "Lothian".
Gwydion, the son of Don, was a prominent British deity and has been compared to Odin. He was the father of the god Lleu, whose mother was Arianrod. The rainbow was "Lleu's rod-sling". Dwynwen, the so-called British Venus, was Christianized as "the blessed Dwyn" and the patron saint of the church of Llanddwyn in Anglesey. The magic cauldron was possessed by the Welsh goddess Kerridwen.