Jemmy

Jemmy is an English diminutive of James, which itself derives from the Late Latin Iacomus, a contracted form of Iacobus, ultimately rooted in the Hebrew name Yaakov, meaning "holder of the heel" or "supplanter." The name was used as a familiar, informal form of James in Britain, particularly from the early modern period onward. It shares this diminutive tradition with Jimmy and Jamie, all of which arose as affectionate shortenings of the same root name.