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
His relationship with Marius and Cinna (his father's sister had been the wife of Marius, he himself had married Cinna's daughter); the courageous refusal of the youth who had scarce outgrown the age of boyhood to send a divorce to his young wife Cornelia at the bidding of the dictator, as Pompeius had in the like case done; his bold persistence in the priesthood conferred upon him by Marius, but revoked by Sulla; his wanderings during the proscription with which he was threatened, and which was with difficulty averted by the intercession of his relatives; his bravery in the conflicts before Mytilene and in Cilicia, a bravery which no one had expected from the tenderly reared and almost effeminately foppish boy; even the warnings of Sulla regarding the "boy in the petticoat" in whom more than a Marius lay concealed--all these were precisely so many recommendations in the eyes of the democratic party.
But Caesar could only be the object of hopes for the future; and the men who from their age and their public position would have been called now to seize the reins of the party and the state, were all dead or in exile.
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Reference address : https://www.ellopos.net/elpenor/rome/5-01-lepidus-sertorius.asp?pg=22