Antiochus I Theos of Commagene

Antiochus I Theos Dicaeus Epiphanes Philoromaeus the Philhellene (r. c.70-c.31 BCE): king of Commagene, builder of the tomb on Nemrud Daği.

Antiochus I of Commagene

Father: Mithridates I Callinicus
Mother: Laodice VII (daughter of the Seleucid king Antiochus VIII Grypus and Tryphaena)

c.70: Accession
In the Third Mithridatic War, which the Romans waged against king Mithridates VI Eupator of Pontus, Antiochus allies himself to the Roman general Lucullus^note[Cassius Dio, Roman History 36.2.5.]
Later, he supports Pompey the Great^note
Pompey adds Seleucia on the Euphrates (=Zeugma) to Commagene^note
Pompey claims he has taken Antiochus captive^note[Appian, Mithridatic Wars 117]
51 Antiochus warns Rome for Parthian agression^note
49-48 Roman Civil War between Pompey and Caesar; Antiochus supports Pompey with 200 mounted archers^note[Caesar, Civil War 3.4.5.], who are used as garrison^note[Appian, Civil Wars 2.49.]
When Caesar wins the Civil War, Antiochus seeks Parthian support
39 Finds himself in trouble when the Roman general Ventidius appears on the scene^note[Cassius Dio, Roman History 48.41.5.]
38 Besieged by Ventidius in Samosata, but he manages to obtain a favorable treatment^note
31 (or earlier): death