George Markley is known as "The Hammer" in the film Thirteen Ghosts.
The Hammer is the ghost of a blacksmith, George Markley, who lived in a small town in the 1890s. He was wrongfully accused of stealing, and when threatened with exile, refused to leave town. A gang led by his accuser hanged his wife and children and burned their bodies; in revenge, George used his sledgehammer to beat his accuser and the other culprits to death. He was then subjected to a cruel form of frontier justice by the townsfolk, being chained to a tree and executed by having railroad spikes driven into his body with his own sledgehammer. They cut off his hand and attached the sledgehammer to the wrist where the hand was cut off. His ghost is seen with the railroad spikes protruding from his body and a sledgehammer for a left hand.