E. Cobham Brewer 1810–1897. Dictionary of Phrase and Fable. 1898.
Jack Ketch.
Although this looks very much like a sobriquet, there seems no sufficient evidence to believe it to be otherwise than a real proper name. We are told that the name Jack was applied to hangmen from Richard Jaquett, to whom the manor of Tyburn once belonged. (See HANGMEN.)
