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
New Complications - Cinna - Strabo - Sulla Embarks for Asia
In reality new clouds very soon began to overcast the clear sky of the conservatives. The relations of Asia assumed daily a more threatening character. The state had already suffered the utmost injury through the delay which the Sulpician revolution had occasioned in the departure of the army for Asia; the embarkation could on no account be longer postponed. Meanwhile Sulla hoped to leave behind him guarantees against a new assault on the oligarchy in Italy, partly in the consuls who would be elected under the new electoral arrangement, partly and especially in the armies employed in suppressing the remains of the Italian insurrection.
In the consular comitia, however, the choice did not fall on the candidates set up by Sulla, but Lucius Cornelius Cinna, who belonged to the most determined opposition, was associated with Gnaeus Octavius, a man certainly of strictly Optimate views. It may be presumed that it was chiefly the capitalist party, which by this choice retaliated on the author of the law as to interest. Sulla accepted the unpleasant election with the declaration that he was glad to see the burgesses making use of their constitutional liberty of choice, and contented himself with exacting from both consuls an oath that they would faithfully observe the existing constitution.
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Reference address : https://www.ellopos.net/elpenor/rome/4-07-sulpician-revolution.asp?pg=79