Tetrarch

At that time Herod the tetrarch heard of the fame of Jesus,
Matthew 14:1 KJV

Now in the fifteenth year of the reign of Tiberius Caesar,
Pontius Pilate being governor of Judaea,
and Herod being tetrarch of Galilee,
and his brother Philip tetrarch of Ituraea and of the region of Trachonitis,
and Lysanias the tetrarch of Abilene,
Luke 3:1 KJV

But Herod the tetrarch,
being reproved by him for Herodias his brother Philip's wife,
and for all the evils which Herod had done,
Luke 3:19 KJV

Now Herod the tetrarch heard of all that was done by him:
and he was perplexed,
because that it was said of some,
that John was risen from the dead;
Luke 9:7 KJV