Please note that Mommsen uses the AUC chronology (Ab Urbe Condita), i.e. from the founding of the City of Rome. You can use this reference table to have the B.C. dates
It was the great remodeller of myths, Stesichorus (122-201) who first
in his "Destruction of Ilion" brought Aeneas to the land of the west,
that he might poetically enrich the world of fable in the country of
his birth and of his adoption, Sicily and Lower Italy, by the contrast
of the Trojan heroes with the Greek.
With him originated the
poetical outlines of this fable as thenceforward fixed, especially the
group of the hero and his wife, his little son and his aged father
bearing the household gods, departing from burning Troy, and the
important identification of the Trojans with the Sicilian and Italian
autochthones, which is especially apparent in the case of the Trojan
trumpeter Misenus who gave his name to the promontory of Misenum.(19)
19. The "Trojan colonies" in Sicily, mentioned by Thucydides, the
pseudo-Scylax, and others, as well as the designation of Capua as a
Trojan foundation in Hecataeus, must also be traced to Stesichorus
and his identification of the natives of Italy and Sicily with
the Trojans.