In castris natus, patriis nutritius in armis,
Jam designati principis omen erat.

Born in the camp, and train'd in every toil
Which taught his sire the haughtiest foes to foil;
Destin'd he seem'd by fate to raise his name,
And rule the empire with Augustan fame.

I find in the public registers that he was born at Antium. Pliny charges
Gaetulicus as guilty of an arrant forgery, merely to soothe the vanity of
a conceited young prince, by giving him the lustre of being born in a
city sacred to Hercules; and says that he advanced this false assertion
with the more assurance, because, the year before the birth of Caius,
Germanicus had a son of the same name born at Tibur; concerning whose
amiable childhood and premature death I have already spoken [387]. Dates
clearly prove that Pliny is mistaken; for the writers of Augustus's
history all agree, that Germanicus, at the expiration of his consulship,
was sent into Gaul, after the birth of Caius. Nor will the inscription
upon the altar serve to establish Pliny's opinion; because Agrippina was
delivered of two daughters in that country, and any child-birth, without
regard to sex, is called puerperium, as the ancients were used to call
girls puerae, and boys puelli. There is also extant a letter written by
Augustus, a few months before his death, to his granddaughter Agrippina,
about the same Caius (for there was then no other child of hers living
under that name). He writes as follows: "I gave orders yesterday for
Talarius and Asellius to set out on their journey towards you, if the
gods permit, with your child Caius, upon the fifteenth of the calends of
June [18th May]. I also send with him a physician of mine, and I wrote
to Germanicus that he may retain him if he pleases. Farewell, my dear