Jenny Greenteeth
English river-hag who drowns children and the unwary.
Jenny Greenteeth—also called Wicked Jenny, Ginny Greenteeth, or Grinteeth—is a figure from English folklore. She is a river-hag, related to the grindylow and similar to Peg Powler, who was believed to drag children and elderly people into the water and drown them. The name is also used for pondweed or duckweed, which can spread across the surface of a small body of water, creating a deceptive and dangerous cover, especially for careless children. This meaning is common around Liverpool and southwest Lancashire.
Descriptions often give her green skin, long hair, and sharp teeth. In Lancashire and north Staffordshire she is called Jinny Greenteeth, while in Cheshire and Shropshire she goes by Wicked Jenny, Ginny Greenteeth, or Jeannie Greenteeth. Some accounts place her lurking in the upper branches of trees at night, though this may be a mix-up with the northern English Jinny-hewlet, a folk name for an owl. Her name comes from the grindylow, which also has the alternate names "Grendith" or "Grinteeth," eventually evolving into "Jenny Greenteeth."
She was likely invented to scare children away from dangerous waters, much like the Slavic Rusalka, Japan’s Kappa, or Australia’s Bunyip. Some folklorists think the tale may recall ancient sacrificial practices. A similar figure in Jamaican folklore, the River Mumma, lives at the head of large rivers, combing her long black hair with a gold comb. She appears at midday and vanishes if someone approaches, but if an intruder sees her first and their eyes meet, terrible things follow. In American folklore around Lake Erie, especially in Erie, Pennsylvania, a being called the Storm Hag (sometimes also called Jenny Greenteeth) is used to explain shipwrecks in the Erie Triangle. She is described as a green-skinned woman with shark-like green teeth and piercing yellow eyes, resting on the lake bottom off Presque Isle. She sings when a ship approaches, and sailors who hear the song are attacked by violent storms and waves, sinking and being devoured.
In popular culture, Jenny Greenteeth inspired the lake monster Meg Mucklebones in Ridley Scott’s 1985 film *Legend*.
- Field
- English folklore
- Nationality
- English
- Known for
- River-hag who drowns children and the elderly; also a name for treacherous pondweed
- Also called
- Wicked Jenny, Ginny Greenteeth, Grinteeth, Jinny Greenteeth, Jeannie Greenteeth
Lore & Background
Jenny Greenteeth was often described as green-skinned, with long hair, and sharp teeth. In Lancashire and north Staffordshire she is called Jinny Greenteeth, while in Cheshire and Shropshire she is called Wicked Jenny, Ginny Greenteeth or Jeannie Greenteeth. She is also described as lurking in the upper branches of trees at night, although this may be a folklorist's confusion with the northern English Jinny-hewlet, a folk name for an owl. Her name is derived from that of the Grindylow, which has the alternate name 'Grendith' or 'Grinteeth,' eventually developing into 'Jenny Greenteeth.'
Reader's Guide
Jenny Greenteeth is significant as a cautionary figure in English folklore, likely invented to frighten children away from dangerous waters. She is similar to the Slavic Rusalka, Japan's Kappa, and Australia's Bunyip, and some folklorists believe the tale recalls sacrificial practices. The name also refers to pondweed or duckweed, common around Liverpool and southwest Lancashire, which forms a deceptive green mat over water. In popular culture, she inspired the lake monster Meg Mucklebones in the 1985 film Legend, appears in Terry Pratchett's The Wee Free Men, and is the subject of the novel Greenteeth by Molly O'Neill. A similar figure called the Storm Hag, uncommonly also known as Jenny Greenteeth, appears in American folklore around Lake Erie, where she is said to attack ships and devour sailors. Her legacy endures as a versatile symbol of watery danger, both as a supernatural hag and as a natural hazard.
Origins, Description & Regional Identity
Jenny Greenteeth occupies a distinctive niche in English folklore as a river-hag whose lineage traces back to the older figure known as the grindylow. The name itself evolved over time: the grindylow's alternate appellations "Grendith" and "Grinteeth" gradually morphed into the more familiar "Jenny Greenteeth," cementing her identity in the popular imagination. She is typically depicted with green skin, long hair, and a mouth full of sharp teeth, and in some tellings she is said to lurk in the upper branches of trees at night—a detail that some scholars suspect is a folklorist's conflation with the Jinny-hewlet, a folk name for an owl. Regional variation in her naming is notable. In Lancashire and north Staffordshire she is called Jinny Greenteeth, while Cheshire and Shropshire speakers prefer Wicked Jenny, Ginny Greenteeth, or Jeannie Greenteeth. Beyond her supernatural role, the name also serves as a local term for pondweed or duckweed that forms a continuous, deceptively solid mat across small bodies of water. This botanical usage is particularly common around Liverpool and southwest Lancashire, where the treacherous surface poses a genuine hazard to unwary children. Her closest English counterpart is Peg Powler, another water-spirit of comparable menace.
A Global Water-Spirit Archetype
Scholars widely regard Jenny Greenteeth as a cautionary invention designed to keep children and the elderly away from dangerous waters, and she fits neatly into a global pattern of aquatic terrors. The Slavic Rusalka, Japan's Kappa, and Australia's Bunyip all serve the same protective-warning function in their respective cultures. Some folklorists go further, suggesting the tales may preserve faint memories of ancient sacrificial practices involving water. Her parallels extend into the Caribbean and North America. In Jamaican folklore, the River Mumma dwells atop a rock at the fountainhead of great rivers, combing long black hair with a gold comb. She appears at midday and vanishes when someone approaches, but if an intruder catches her gaze first, dire consequences follow. In American urban legend, a figure known as the Storm Hag—uncommonly also called Jenny Greenteeth—haunts the bottom of Lake Erie off Presque Isle, Pennsylvania. Described as a green-skinned woman with shark-like green teeth and piercing yellow eyes, she sings whenever a vessel draws near, then unleashes violent storms that sink and devour the crew. These global echoes underscore how universally cultures project fear of hidden water dangers onto a single, terrifying feminine figure.
Literary Echoes Across Centuries
Jenny Greenteeth has left a persistent mark on English-language literature. John Heath-Stubbs invoked her in his poem "The Green Man's Last Will and Testament," mourning the fading of the cruel nymphs of the northern streams and naming her alongside Peg Powler of the Tees. In Simon Brown's novelette "Water Babies," she is cited as one of many names for a child-snatching water-demon, set against a plot in which an Australian police officer investigates drownings caused by a seal-like predator. More recent fiction has given her a fuller presence. Leife Shallcross's "Pretty Jennie Greenteeth" won the 2016 Aurealis Award for best young adult short story. Molly O'Neill's novel Greenteeth is narrated from Jenny's own perspective as she departs her home lake on a quest alongside a hobgoblin and an accused witch; within that world, the name functions as both a personal identity and the designation for an entire species of fairie creatures. Terry Pratchett placed her in the opening chapter of The Wee Free Men, where young witch Tiffany Aching glimpses her in a river—thin-faced, sharp-toothed, with huge round eyes and dripping green hair like waterweed. She also makes a brief appearance in the Hellboy story "The Corpse."
Screen, Tabletop & Beyond
Jenny Greenteeth's influence extends well beyond the page. Ridley Scott's 1985 fantasy film Legend drew directly on her image to create the lake monster Meg Mucklebones, translating the river-hag's aquatic menace to the big screen for a wide international audience. In tabletop gaming, she has become a recurring encounter in Dungeons & Dragons fifth-edition adventure modules, appearing in DDEX01-08 "Tales Trees Tell" (2014) and in the 2016 DDAL04 series across "Suits of the Mist," "The Ghost," and "The Dark Lord." These modules place her in the hands of game masters as a ready-made water-dwelling threat for parties exploring rivers and lakes. Her reach also touches newer and more niche media. Georgiea Howarth's 2022 work Hubris: The Chronicles of a Tooth Fairy references the figure, indicating that Jenny Greenteeth continues to surface in contemporary speculative and horror-adjacent writing. From a Ridley Scott blockbuster to a printed D&D module to a modern indie publication, the river-hag has proven remarkably adaptable—shifting from a local Lancashire warning about duckweed-covered ponds to a versatile narrative device that writers and game designers keep returning to whenever they need a face for the danger lurking beneath calm water.
Frequently Asked Questions
Who is Jenny Greenteeth?
Jenny Greenteeth is a river-hag from English folklore, also known as Wicked Jenny, Ginny Greenteeth, or Grinteeth. She is a water-dwelling creature tied to small rivers, ponds, and streams, and she occupies a similar niche to other English water-creatures like the grindylow and Peg Powler.
What does Jenny Greenteeth look like?
Folklore descriptions typically give her green skin, long hair, and sharp teeth. These features reinforce her association with the murky, plant-choked waters she inhabits.
What does Jenny Greenteeth do?
She is believed to lure children and elderly people to the water's edge and then drag them beneath the surface to drown. Her danger is compounded by the fact that the pondweed sharing her name can form a deceptive green carpet over treacherous water, making it look safe to cross.
What does the name 'Jenny Greenteeth' actually refer to?
Beyond the hag herself, the name is a folk term for pondweed or duckweed that spreads across the surface of small ponds and streams. This plant creates a false, grassy-looking cover that can trap careless children, which is why the creature takes the same name.
Where is Jenny Greenteeth found in folklore?
She is primarily associated with the traditions of Liverpool and southwest Lancashire in England. She serves as a cautionary figure for children near water and is sometimes compared to other English river-creatures such as the grindylow and Peg Powler.
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