The
ancient Romans had several opinions about the derivation of the Latin word
Vaticanus.
Varro (1st century BC) connected it to a
Deus Vaticanus or
Vagitanus, a
Roman deity thought to endow infants with the capacity for speech evidenced by their first wail (
vagitus, the first
syllable of which is pronounced in
Classical Latin). Varro's rather complicated explanation relates this function to the
tutelary deity of the place and to the advanced powers of speech possessed by a prophet (
vates), as preserved by the later
antiquarian Aulus Gellius: We have been told that the word
Vatican is applied to the hill, and the deity who presides over it, from the
vaticinia, or prophecies, which took place there by the power and inspiration of the god; but Marcus Varro, in his book on
Divine Things, gives another reason for this name. "As
Aius," says he, "was called a deity, and an altar was built to his honour in the lowest part of the new road, because in that place a voice from heaven was heard, so this deity was called
Vaticanus, because he presided over the principles of the human voice; for infants, as soon as they are born, make the sound which forms the first syllable in
Vaticanus, and are therefore said
vagire (to cry) which word expresses the noise which an infant first makes".
St. Augustine, who was familiar with Varro's works on
ancient Roman theology, mentions this deity three times in
The City of God.
Vaticanus is more likely to derive in fact from the name of an
Etruscan settlement, possibly called
Vatica or
Vaticum, located in the general area the Romans called
vaticanus ager, "Vatican territory". If such a settlement existed, however, no trace of it has been discovered. The
consular fasti preserve a personal name
Vaticanus in the mid-5th century BC, of unknown relation to the place name. ==Topography of ancient Rome==