OXO is the fifteenth 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, OXO, 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
OXO's three Parts are Tahamdo, ruling a Part called Itergi that answers to no known place, under King Zarzilg of the tribe of Naphtali; Nociabi, ruling Macedonia, under King Lavavot of the tribe of Gad; and Tastoxo, ruling Garamannia, the country of the Garamantes deep in the Libyan Sahara, known to Dee only through Herodotus and Pliny, under King Arfaolg of the tribe of Ephraim. The ninety-one Parts fall three to an Aethyr for the first twenty-nine Aethyrs, with the thirtieth taking four, which is the whole of the arithmetic behind the number ninety-one, itself the sum of the integers from one to thirteen.