The dedicator of the monument is not known from other sources. He was a Roman citizen, as shown by the use of Roman nomenclature, i.e., he bears praenomen (Λούκιος = Lucius), gentilicium (Τρέβιος = Trebius), and cognomen (Λέων). Although the Greek name Λέων is attested in the Greek and Roman world, there is only one other record of the gentilicium Trebius in Macedonia, namely in Thessalonica. The diffusion of the name in the rest of the Greek world is also limited. The few examples are found mainly in Rhodes and Ankara, as well as in Kos. The Trebii of Kos are among the families of Roman traders who settled on the island. It is possible that Lucius Trebius Leo from Dion also belonged to a Roman trader family that moved to Macedonia.