Tradition: English Mythology
Alternative Names: Jack in Irons
Category: Giant
The Myth
Jack-in-Irons is a terrifying giant from the folklore of Yorkshire, England, said to haunt lonely roads and isolated paths. His body is covered in heavy chains, and he is described as wearing the severed heads of his victims. He carries a large club studded with spikes, making him a formidable and deadly presence for anyone unfortunate enough to encounter him while travelling through the countryside.
The origin of his name is uncertain. Although he is called Jack-in-Irons, the name Jack may not refer to a specific individual. In English folklore, Jack is sometimes used as a generic name for an unknown man, much like the modern expression John Doe. The name may therefore identify him as an unnamed or mysterious figure rather than reveal his true identity.
Jack-in-Irons has also appeared in modern fantasy literature. In Laurell K. Hamilton’s Merry Gentry series, a character belonging to this monstrous type is named Uther Squarefoot. He is described as thirteen feet tall, with a head resembling a pig more than a human, and two curling tusks on either side of his snout. This literary portrayal expands upon the fearsome image of the chain-covered giant, although these particular physical details belong to the modern fictional depiction rather than necessarily to the traditional Yorkshire legend.
Sources
“Jack-in-Irons.” Wikipedia: The Free Encyclopedia. Wikimedia Foundation. Accessed October 16, 2026. https://en.wikipedia.org/wiki/Jack-in-Irons