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
Alongside of these Bedouin princes there had everywhere appeared bold cavaliers, who equalled or excelled the children of the desert in the noble trade of waylaying. Such was Ptolemaeus son of Mennaeus, perhaps the most powerful among these Syrian robber- chiefs and one of the richest men of this period, who ruled over the territory of the Ityraeans--the modern Druses--in the valleys of the Libanus as well as on the coast and over the plain of Massyas to the northward with the cities of Heliopolis (Baalbec) and Chalcis, and maintained 8000 horsemen at his own expense; such were Dionysius and Cinyras, the masters of the maritime cities Tripolis (Tarablus) and Byblus (between Tarablus and Beyrout); such was the Jew Silas in Lysias, a fortress not far from Apamea on the Orontes.
In the south of Syria, on the other hand, the race of the Jews seemed as though it would about this time consolidate itself into a political power. Through the devout and bold defence of the primitive Jewish national worship, which was imperilled by the levelling Hellenism of the Syrian kings, the family of the Hasmonaeans or the Makkabi had not only attained to their hereditary principality and gradually to kingly honours;(10) but these princely high-priests had also spread their conquests to the north, east, and south.
10. Cf. IV. I. The Jews
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Reference address : https://www.ellopos.net/elpenor/rome/5-04-pompeius-east.asp?pg=32