History is silent as to the precise date of Jettenbach's establishment. It is believed to date to before the year 1000, but is first mentioned in a document from 1348 (a full transcription of the document in question, in archaic German, can be found in the German article). At that time, Jettenbach belonged to the extensive area of the "Reichsland" ("Imperial Land") near Kaiserslautern, which was already subdivided into separate court districts ("Gerichte"). Jettenbach belonged to the "Gericht" (or "Amt") of Deinsberg (Theißberg). Later, this "Amt" was described as the "Schultheißerei" (judicial district) of Reichenbach, and for a time also as the "Jettenbacher Gericht". This may well have something to do with where the "Schultheiß’s" seat was at any given time.