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
Men of senatorial families, however, not
only addressed a Greek audience in Greek, but even published their
speeches--Tiberius Gracchus (consul in 577 and 591) so published a
speech which he had given at Rhodes--and in the time of Hannibal wrote
their chronicles in Greek, as we shall have occasion to mention more
particularly in the sequel. Individuals went still farther. The
Greeks honoured Flamininus by complimentary demonstrations in the
Roman language,(2) and he returned the compliment; the "great general
of the Aeneiades" dedicated his votive gifts to the Greek gods after
the Greek fashion in Greek distichs.(3)