Pliny's account is, however, nearer the truth than that of Strabo and Ptolemy; for it is certain that Ortona and Anxanum (modern Lanciano), both of which are situated considerably to the north of the Sagrus, were Frentanian cities.
On the west, they were probably not separated from the Samnites by any well-marked natural boundary, but occupied the lower slopes of the Apennines as well as the hilly country extending from thence to the sea, while the more lofty and central ridges of the mountains were included in Samnium.
The Frentani are expressly termed by Strabo as a Samnite people, and he appears to distinguish them as such from the neighbouring tribes of the Marrucini, Peligni, Marsi, and Vestini, with whom they had otherwise much in common.
[14] They gave a still more striking proof of fidelity during the Second Punic War, by adhering to the Roman cause after the battle of Cannae, when so many of the Italian allies, including the greater part of the Samnites, went over to Hannibal.
[16] Notwithstanding their vaunted fidelity, the Frentani joined in the general outbreak of the Italian allies in the great Social War, 90 BC:[17] they do not, however, appear to have taken any prominent part, and we can only infer that they received the Roman franchise at the same time as the neighbouring tribes.
The Antichità Frentane (1809) by Domenico Romanelli, who was a native of this part of Italy, is a very uncritical performance; but the author was led astray principally by the inscriptions and other documents put forth by Polidoro, an Italian antiquary of the 18th century, who appears to have had no hesitation in forging, or at least corrupting and altering them in such a manner as to suit his purpose.
But it is certain that an ancient road traversed the territory of the Frentani, in its whole length from Aternum to Larinum, keeping for the most part near the sea-coast, but diverging for the purpose of visiting Anxanum.
The stations along it are thus given in the Itinerary of Antoninus: Of these, Angulus or Angulum is certainly misplaced, possibly present day Città Sant'Angelo, and should have been inserted between Hadria (modern Atri) and the Aternus.
They stand thus: There exist copper coins with the Oscan legend "Frentrei", which may probably be referred to the Frentani rather than to the town of Ferentum in Apulia, to which they have been assigned by some writers.