Any statement about the thirtieth Aethyr belongs to one of three layers of the record, and they are roughly three centuries apart. Saying which layer a claim comes from is most of what can honestly be said about an individual Aethyr.
The one with four
TEX is the thirtieth and, by the convention of the material, the nearest of the Aethyrs. It is also the only one of the thirty to hold four governors where every other holds three, which is how the ninety-one of the Dee and Kelley material are arrived at: twenty-nine threes and one four.
Because the numbering runs from the most remote to the nearest, TEX is where Crowley began his ascent, and it is the first Aethyr in his working order and the last in the numbering.
Crowley, 1900 and 1909
Almost everything said about the character of an individual Aethyr in modern circulation comes from Aleister Crowley. By his own account he began the series in Mexico in 1900 and completed it with Victor Neuburg in the Algerian desert in late 1909, and the record was published as The Vision and the Voice. Those descriptions are Crowley's visionary record of 1909, not Dee's, and they are not in the sixteenth-century diaries at all.
Why the layers are kept apart here
The three are separated in this atlas because they make different kinds of claim. The diaries supply the names and the structure, the order supplies a ritual context, and Crowley supplies the descriptions. Attributing any of the three to another is the commonest error made about this material.