Giants (Welsh folklore)

Lore & Background

In the Mabinogion, giants play central roles. In the Second Branch, Bran the Blessed (Bendigeidfran) rules Britain and cannot fit inside any dwelling. The Pair Dadeni (Cauldron of Rebirth) is brought from Ireland by the giant Llassar Llaes Gyfnewid and his wife Cymidei Cymeinfoll. In 'Culhwch and Olwen,' giants are antagonists throughout: Ysbaddaden is slain by his nephew Goreu fab Custennin, and Wrnach is killed by Cei, who can expand his height to that of a tree.

The legend of Rhitta Gawr tells of a giant who took the beards of warring kings to fashion a cape. In the most common version, Arthur slew Rhitta with a blow that clove him in twain. A cairn built over his body is traditionally associated with Yr Wyddfa (Snowdon), though the mountain's name itself is not derived from the cairn. Other tales include the capture of Maelor Gawr, whose son Cornippin died trying to rescue him, and Cribwr Gawr, whose three sisters were killed by Arthur through trickery.

Reader's Guide

Giants in Welsh folklore serve as both primordial inhabitants and formidable adversaries, reflecting themes of power, conflict, and the triumph of human heroes. Their stories, preserved in the Mabinogion and Arthurian tradition, illustrate the transition from a mythic past to a human-dominated world. The tale of Rhitta Gawr, with its variant endings, shows how oral tradition can evolve, while the account of Cribwr Gawr highlights the use of cunning over brute force. Giants like Benlli Gawr and Canthrig Bwt embody moral lessons about hospitality and danger. The maritime tale of a giant using a ship's mast as a toothpick underscores the blending of Christian and folk motifs. Overall, these figures enrich Welsh cultural identity and provide a lens into medieval beliefs about ancestry, heroism, and the natural world.

Did You Know?

• Geoffrey of Monmouth described giants as the original inhabitants of Britain, overwhelmed by human settlers.
• Bran the Blessed could never fit inside any dwelling, according to the Second Branch of the Mabinogi.
• Rhitta Gawr fashioned a cape from the beards of twenty-six kings; Arthur slew him, and his burial site is traditionally linked to Yr Wyddfa (Snowdon).
• Cei, in 'Culhwch and Olwen,' could expand his height to that of a tree.

Physical Form and Folkloric Kinship

The Knocker, also called the Knacker or Tommyknocker in American usage, is a diminutive subterranean creature rooted in Cornish and Devon tradition. Standing roughly two feet tall, it is depicted with an oversized head, elongated arms, deeply wrinkled skin, and a fringe of white whiskers. It dresses in a miniature replica of a standard miner's working outfit, marking it unmistakably as a creature of the underground rather than the hillside or forest. The Knocker sits within a broader family of gnome-like beings: the Welsh coblyn, the Irish leprechaun, the Kentish kloker, and the English and Scottish brownie are all considered close relatives. Despite their small stature, these figures are far from harmless. They are credited with random acts of mischief, particularly the theft of tools and food left unattended by miners, a habit that made vigilance a daily necessity in the Cornish and Devon mining communities.

Benevolence, Mischief, and the Safety Role

Within Cornish mining culture the Knocker occupied a deliberately ambiguous position. Miners held that these little figures would beckon them toward rich veins of tin, serving as supernatural guides through the dark rock. Yet the same creatures were notorious tricksters, hiding tools and extinguishing candles to cause minor chaos. As the industry transitioned from independent, family-run operations to large industrialized companies, the Knocker's function shifted toward safety: it was said to knock on mine walls as a warning of impending structural collapse. Two rival origin narratives circulated among the workforce. One identified the Knockers as the lingering spirits of Jewish laborers who had worked the mines during the eleventh and twelfth centuries; the other cast them as the ghosts of miners killed in underground accidents. To express gratitude and avert future danger, workers would cast the final bite of their pasty into the shaft, a small offering to keep the creatures content.

Crossing the Atlantic and the Cousin Jacks

Beginning in the 1820s, Welsh and Cornish immigrants carried Knocker lore to western Pennsylvania, and the subsequent gold and silver rushes spread the tales across Colorado, Nevada, and California. Cornish miners were so heavily recruited that, when asked whether relatives might come to work the shafts, they would quip about a cousin Jack back in Cornwall who would travel if someone paid his boat fare. This joke gave the immigrant group the enduring nickname Cousin Jacks. These miners reportedly refused to enter a new mine until management guaranteed that the Knockers were already on duty. Even non-Cornish workers, hearing the creak and groan of deep timber supports, grew to respect the creatures. In the American context the Knockers took on a more ghostly quality than their elfish British counterparts. Belief endured well into the twentieth century: in 1956, when a mine was sealed, fourth-, fifth-, and sixth-generation Cousin Jacks circulated a petition asking owners to set the Knockers free so they could migrate to other mines, and the owners obliged. Nevadan miners still held the belief as late as the 1930s.

From Mine Shafts to Page and Pint

The Knocker's cultural footprint stretches far beyond the mining communities that first described it. Stephen King centered his science fiction and horror novel The Tommyknockers on the creature, while the Hardy Boys story Hunting for Hidden Gold includes a chapter titled "Tommy-clockers." In the Spiderwick Chronicles, a kind Knocker assists young protagonists in escaping a dwarf kingdom. Wallace Stegner's Pulitzer Prize-winning Angle of Repose introduces the concept when the protagonist's husband and his colleagues take her into a quicksilver mine at New Almaden. Terry Pratchett's Discworld novels feature "knockermen," dwarves whose job is preventing firedamp explosions, who hear Knockers during their shifts; high-ranking dwarves in that universe are often retired knockermen. In the physical world, Tommyknocker Brewery in Idaho Springs, Colorado, opened its doors in 1994, naming itself after the mythical figure. The creature also features in the folklore of Staffordshire miners, demonstrating its reach across multiple English mining traditions.