Billmjb,
I made mention of this above and you might already know this, but Herod Antipas - King Herod’s son, was tetrarch and instrumental in Jesus’ crucifixion. The Herodian Dynasty was a quasi Jewish / quasi Roman system of governance.
en.wikipedia.org/wiki/Herod_Antipas
From Wiki - sorry so long - but history always is
Herod Antipas (short for Antipatros) (before 20 BC – after 39 AD) was a first century AD ruler of Galilee and Perea, who bore the title of tetrarch (“ruler of a quarter”). He is best known today for accounts in the New Testament of his role in events that led to the executions of John the Baptist and Jesus of Nazareth, and through their portrayal in modern media, such as film.
After inheriting his territories when the kingdom of his father Herod the Great was divided upon his death in 4 BC, Antipas ruled them as a client state of the Roman Empire. He was responsible for building projects at Sepphoris and Betharamphtha, and more important for the construction of his capital Tiberias on the western shore of the Sea of Galilee. Named in honor of his patron, the emperor Tiberius, the city later became a center of rabbinic learning.
Antipas divorced his first wife Phasaelis, the daughter of King Aretas IV of Nabatea, in favour of Herodias, who had formerly been married to his brother Herod Philip I. According to the New Testament Gospels, it was John the Baptist’s condemnation of this arrangement that led Antipas to have him arrested; John was subsequently put to death.
The Gospel of Luke states that when Jesus was brought before Pontius Pilate for trial, Pilate handed him over to Antipas, in whose territory Jesus had been active. However, Antipas sent him back to Pilate. The legal basis for these events, and the very historicity of Antipas’ involvement in the trial, have been the subject of scholarly debate. Besides provoking his conflict with the Baptist, the tetrarch’s divorce added a personal grievance to previous disputes with Aretas over territory on the border of Perea and Nabatea. The result was a war that proved disastrous for Antipas; a Roman counter-offensive was ordered by Tiberius, but abandoned upon that emperor’s death in 37 AD. In 39 AD Antipas was accused by his nephew Agrippa I of conspiracy against the new Roman emperor Caligula, who sent him into exile in Gaul. Accompanied there by Herodias, he died at an unknown date.
Early Life:
Antipas was a son of Herod the Great, who had become king of Judea, and Malthace, who was from Samaria.[1] His date of birth is unknown but was before 20 BCE.[2] Antipas, his full brother Archelaus and his half-brother Philip were educated in Rome.[3]
Antipas was not Herod’s first choice of heir. That honor fell to Aristobulus and Alexander, Herod’s sons by the
Hasmonean princess Mariamne. It was only after they were executed (c. 7 BCE), and Herod’s oldest son Antipater was convicted of trying to poison his father (5 BCE), that the now elderly Herod fell back on his youngest son Antipas, revising his will to make him heir.[4]
During his fatal illness in 4 BC, Herod had yet another change of heart about the succession. According to the final version of his will, Antipas’ elder brother Archelaus was now to become king of Judea, Idumea and Samaria, while Antipas would rule Galilee and Perea with the lesser title of tetrarch. Philip was to receive Gaulanitis (the Golan Heights), Batanaea (southern Syria), Trachonitis and Auranitis (Hauran).[5]
Because of Judea’s status as a Roman client kingdom, Herod’s plans for the succession had to be ratified by Augustus. The three heirs therefore travelled to Rome to make their claims, Antipas arguing he ought to inherit the whole kingdom and the others maintaining that Herod’s final will ought to be honored.
Despite qualified support for Antipas from Herodian family members in Rome, who favoured direct Roman rule of Judea but considered Antipas preferable to his brother, Augustus largely confirmed the division of territory set out by Herod in his final will. Archelaus had, however, to be content with the title of ethnarch rather than king.[6]
While Archelaus was deemed incompetent by Augustus and replaced with a prefect in 6 AD, Antipas would govern Galilee and Perea for forty-two years.[7] These territories were separated by the region of the Decapolis, with Galilee to the north and Perea to the south (see map).
Threats to stability in both areas would have been clear to Antipas when he took office. While he had been making his case to Augustus in Rome, dissidents led by one Judas son of Hezekiah had attacked the palace of Sepphoris in Galilee, seizing money and weapons with which they terrorised the area.[8] In a counterattack ordered by Quinctilius Varus, Roman governor of Syria, Sepphoris was destroyed by fire and its inhabitants sold as slaves.[9] Perea, meanwhile, bordered on the kingdom of Nabatea, which had long had uneasy relations with Romans and Jews.[10]