Welsh mythology
folk traditions developed in Wales and by the Celtic Britons elsewhere
Welsh mythology, also known as Y Chwedlau (Welsh for 'the legends'), consists of both folk traditions developed in Wales, and traditions developed by the Celtic Britons elsewhere before the end of the first millennium. As in most predominantly oral societies, Celtic mythology and history were recorded orally by specialists such as druids (Welsh: derwyddon). This oral record has been lost or altered as a result of outside contact and invasion over the years. Much of this altered mythology and history is preserved in mediaeval Welsh manuscripts, which include the Red Book of Hergest, the White Book of Rhydderch, the Book of Aneirin and the Book of Taliesin. Other works connected to Welsh mythology include the ninth-century Latin historical compilation Historia Brittonum ('History of the Britons') and Geoffrey of Monmouth's 12th-century Latin chronicle Historia Regum Britanniae ('History of the Kings of Britain'), as well as later Welsh folklore, such as the materials collected in The Welsh Fairy Book by William Jenkyn Thomas (1908).
Cosmogony and creation
As with other Insular Celts, no direct written accounts of the origins of the cosmos survive. It can be assumed that these Celts did have a complex cosmogony, given the accounts from classical authors about the depth of knowledge of the druids who passed down their knowledge via orature.
However, scholars can find connections to the broader Proto-Indo-European system in both the names of the deities themselves and in the later written tales that likely preserve remnants of the earlier orally transmitted narratives. Legends were not written down until after the Christianization of Britain, however, so these accounts are rather indirect; additionally, they likely evolved substantially over time anyway, as narrative systems typically do.
John T. Koch proposes that the name of the goddess Dôn, for instance, likely comes from *ghdhonos, meaning "the earth." In this sense she serves as the Welsh version of the *dheghom figure from Proto-Indo-European mythology, i.e.
Begin with the source’s own compact description: “Welsh mythology” is folk traditions developed in Wales and by the Celtic Britons elsewhere. The dossier treats that line as a proposition to test through Welsh, mythology and folk, not as a finished interpretation.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 4, 2026. The linked authority identifier is Q2243531. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1908.
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This entry incorporates text from “Welsh mythology” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.