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Human settlement in Italy
Acerrae Vatriae is mentioned by Pliny the Elder as having been a town of the Sarranates situated in Umbria, but it was already destroyed in his time, and all clue to its position is lost.
References
Edward Herbert Bunbury, ‘ ACERRAE’, in Dictionary of Greek and Roman Geography, ed. by William Smith, 2 vols (London:Walton and Maberly, 1854), I, 11.
Pliny the Elder, The Natural History, tr. by John Bostock (London: Taylor and Francis,1855), III, chapter 19 (14).