Archigallus
The high priests are well-documented from archaeology. At Pessinus, the centre of the Cybele cult, there were two high priests during the Hellenistic period, one with the title of "Attis" and the other with the name of "Battakes". Both were eunuchs. The high priests had considerable political influence during this period, and letters exist from a high priest Attis to the kings of Pergamon, Eumenes II and Attalus II, inscribed on stone. Later, during the Flavian period, there was a college of ten priests, not castrated, and now Roman citizens, but still using the title "Attis".
In Rome, the head of the galli was known as the archigallus, at least from the period of Claudius on. A number of archaeological finds depict the archigallus wearing luxurious and extravagant costumes. The archigallus was always a Roman citizen chosen by the quindecimviri sacris faciundis, whose term of service lasted for life.
Being a Roman citizen, as well as being employed by the Roman State, meant that the archigallus had to preserve the traditions of Cybele's cult while not violating Roman prohibitions in religious behavior. Hence, the archigallus was never a eunuch, as all citizens of Rome were forbidden from emasculation. The signs of his office have been described as a type of crown, possibly a laurel wreath, as well as a golden bracelet known as the occabus.
Along with the institution of the archigallus came the Phrygianum sanctuary as well as the rite of the taurobolium as it pertains to the Magna Mater, two aspects of the Magna Mater’s cultus that the archigallus held dominion over.
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