POP is the nineteenth of the thirty Aethyrs, or Airs, of the Enochian system, the thirty spiritual regions delivered to the mathematician John Dee and the scryer Edward Kelley in 1584, and named in the record Dee compiled from those sessions. Its three-letter name, POP, was received letter by letter through Kelley's scrying.
Place in the system
Each Aethyr is said to contain three Governors among whom the ninety-one Parts of the Earth are divided.
The thirty Aethyrs are the raw gift of the Dee-Kelley sessions; the elaborate visionary content attached to them in modern practice belongs to a later layer, above all Aleister Crowley's The Vision and the Voice, his record of scrying all thirty Aethyrs in 1900 and 1909. The Aethyr is described here as an element of that documented historical tradition, studied as such, its entities not reified.
The three Governors
POP's three Parts are Torzoxi, ruling a Part called Parstavia with no secure identification, under King Arfaolg of the tribe of Ephraim; Abriond, ruling Celtica, the Celtic portion of Gaul, under King Cadaamp of the tribe of Benjamin; and Omagrap, ruling a Part called Vinsan that cannot be matched to any known region, under King Zinggen of the tribe of Zebulun. Gaul is represented twice in the ninety-one, here as Celtica and earlier as Gallia, using two different classical conventions for the same country, and the angels described the whole tabulation's purpose to Dee as the magical government of nations, a purpose that fit his own long-held ambitions for England exactly.