th the building of the circus Gai et Neronis, which was also called
circus Vaticanus (Plin. NI-I xvi. 201; xxxvi. 74), increased importance
was given to this particular area, and Vaticanum then came to be used
of the circus itself, as well as of the whole district (Suet. Claud. 21. 2:
circenses frequenter etiam in Vaticano commisit; Amm. Marcell. xvii. 4.
16: quorum unus (obeliscus) in Vaticano; Not. Reg. XIV, cf. however,
Pr. Reg. 207).
Another application of the name Vaticanum seems to have been to
the shrine of the Magna Mater, whose cult was established close to the
circus (cf. FRIGIANUM), if we may judge from an inscription found at
Lyon (CIL xiii. 1751: L. Aemilius Carpus vires excepit et a Vaticano
transtulit; cf. also an inscription of 236 A.D. from Kastell near Mayence,
ib. 728 : deae Virtuti Bellonae montem Vaticanum vetustate conlabsum
restituerun(t) hastiferi civitatis Mattiacor.) (Jord. i. I. 438; HJ 623;
Gilb. ii. 122; iii. 449; and especially Elter, RhM 1891, 112-138).