This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
The Arbatel's seven Olympic spirits did not appear from nothing in 1575. Agrippa's earlier Three Books of Occult Philosophy, first printed in the 1530s, already sets out a documented system of planetary intelligences and spirits governing the seven classical spheres, and the Arbatel's own scheme is best read as one of several competing sixteenth and seventeenth century attempts to systematize planetary spirit lore that Agrippa's widely circulated text had already helped popularize.
That documented earlier context matters for how an entry is written, because Agrippa's own planetary spirits carry different names and a different internal logic from the Arbatel's Olympic governors, and the two texts are not the same system under two titles: a later grimoire compiler drawing on both, as John Dee's own Heptarchia Mystica does under a third, distinct naming scheme again, is documented evidence of a genuinely plural sixteenth and seventeenth century tradition of planetary spirit magic rather than one single lineage.
An entry uses this documented textual history to keep the Arbatel's own seven Olympic spirits distinct from Agrippa's separate planetary intelligences and Dee's separate Heptarchia names, naming each system's own source rather than treating the three as interchangeable.