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
From: The History of Rome, by Theodor Mommsen
Translated with the sanction of the author by William Purdie Dickson
Phillipus - Metellus, Catulus, the Luculli
Of the older generation the civil wars had left not a single man of repute except the old shrewd and eloquent Lucius Philippus (consul in 663), who, formerly of popular leanings,(5) thereafter leader of the capitalist party against the senate,(6) and closely associated with the Marians,(7) and lastly passing over to the victorious oligarchy in sufficient time to earn thanks and commendation,(8) had managed to escape between the parties.
5. Cf. IV. IV. Administration under the Restoration
6. Cf. IV. IV. Livius Drusus
7. Cf. IV. IX. Government of Cinna
8. Cf. IV. IX. Pompeius
Among the men of the following generation the most notable chiefs of the pure aristocracy were Quintus Metellus Pius (consul in 674), Sulla's comrade in dangers and victories; Quintus Lutatius Catulus, consul in the year of Sulla's death, 676, the son of the victor of Vercellae; and two younger officers, the brothers Lucius and Marcus Lucullus, of whom the former had fought with distinction under Sulla in Asia, the latter in Italy; not to mention Optimates like Quintus Hortensius (640-704), who had importance only as a pleader, or men like Decimus Junius Brutus (consul in 677), Mamercus Aemilius Lepidus Livianus (consul in 677), and other such nullities, whose best quality was a euphonious aristocratic name.
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Reference address : https://www.ellopos.net/elpenor/rome/5-01-lepidus-sertorius.asp?pg=9