Herod Aristobulus - Grandson of Herod the Great

Herod Aristobulus is only mentioned by his household which was likely former servants of Herod Aristobulus who stayed together. Paul salutes them as approved of Christ. Interestingly, the very next person Paul salutes is Herodion whose very name suggests he was once a servant of the line of Herods (the Herodian Dynasty).

Herod Aristobulus is the son of Herod the Great and father of Herodias. If you follow the family history, you'll see that Aristobulus' daughter married two of his brothers!