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
Princes and Chiefs
Vassals of lesser importance were, the other numerous Galatian tetrarchs, one of whom, Bogodiatarus prince of the Trocmi, was on account of his tried valour in the Mithradatic war presented by Pompeius with the formerly Pontic frontier-town of Mithradatium; Attalus prince of Paphlagonia, who traced back his lineage to the old ruling house of the Pylaemenids; Aristarchus and other petty lords in the Colchian territory; Tarcondimotus who ruled in eastern Cilicia in the mountain-valleys of the Amanus; Ptolemaeus son of Mennaeus who continued to rule in Chalcis on the Libanus; Aretas king of the Nabataeans as lord of Damascus; lastly, the Arabic emirs in the countries on either side of the Euphrates, Abgarus in Osrhoene, whom the Romans endeavoured in every way to draw over to their interest with the view of using him as an advanced post against the Parthians, Sampsiceramus in Hemesa, Alchaudonius the Rhambaean, and another emir in Bostra.
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Reference address : https://www.ellopos.net/elpenor/rome/5-04-pompeius-east.asp?pg=53