Jack


Jack started out as a medieval pet form of John. In the middle ages, pet forms were made by adding the suffixes -kin or -cock to names. Jack was a shortening of Jankin. Many of these pet forms survive in surname form, such as Jenkins, Hodgkin (Hodge was a short form of Roger), Hancock (form of Henry), and Hitchcock (Hitch was a short form of Richard).
See Also: John

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