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
As a single
incident in the series of movements among the neighbouring peoples
caused by this Samnite settlement may be mentioned the surprise of
Cumae by Tyrrhenians from the Upper Sea, Umbrians, and Daunians in
the year 230.
If we may give credit to the accounts of the matter
which present certainly a considerable colouring of romance, it
would appear that in this instance, as was often the case in such
expeditions, the intruders and those whom they supplanted combined
to form one army, the Etruscans joining with their Umbrian enemies,
and these again joined by the Iapygians whom the Umbrian settlers
had driven towards the south.
Nevertheless the undertaking proved
a failure: on this occasion at least the Greek superiority in
the art of war, and the bravery of the tyrant Aristodemus, succeeded
in repelling the barbarian assault on the beautiful seaport.