Naxos in Sicily is said to have been the oldest of all the Greek towns founded by strict colonization in Italy or Sicily; the Achaean and Dorian colonizations followed, but not until a later period.
It appears, however, to be quite impossible to fix the dates of this series of events with even approximate accuracy.

The founding of the Achaean city of Sybaris in 33, and that of the Dorian city Tarentum in 46, are probably the most ancient dates in Italian history, the correctness, or at least approximation to correctness, of which may be looked upon as established.

But how far beyond that epoch the sending forth of the earlier Ionian colonies reached back, is quite as uncertain as is the age which gave birth to the poems of Hesiod or even of Homer.

If Herodotus is correct in the period which he assigns to Homer, the Greeks were still unacquainted with Italy a century before the foundation of Rome.

The date thus assigned however, like all other statements respecting the Homeric age, is matter not of testimony, but of inference; and any one who carefully weighs the history of the Italian alphabets as well as the remarkable fact that the Italians had become acquainted with the Greek people before the name "Hellenes" had emerged for the race, and the Italians borrowed their designation for the Hellenes from the stock of the -Grai- or -Graeci- that early fell into abeyance in Hellas,( 1) will be inclined to carry back the earliest intercourse of the Italians with the Greeks to an age considerably mere remote.
Character of the Greek Immigration The history of the Italian and Sicilian Greeks forms no part of the history of Italy; the Hellenic colonists of the west always retained the closest connection with their original home and participated in the national festivals and privileges of Hellenes.
But it is of importance even as bearing on Italy, that we should indicate the diversities of character that prevailed in the Greek settlements there, and at least exhibit some of the leading features which enabled the Greek colonization to exercise so varied an influence on Italy.
The League of the Achaen Cities Of all the Greek settlements, that which retained most thoroughly its distinctive character and was least affected by influences from without was the settlement which gave birth to the league of the Achaean cities, composed of the towns of Siris, Pandosia, Metabus or Metapontum, Sybaris with its offsets Posidonia and Laus, Croton, Caulonia, Temesa, Terina, and Pyxus.