Acts 13:1 mentions in a list of prophets from Antioch "Manaen who was a lifelong friend of Herod Antipus". Do we know anything about this man's life or relationship with Herod? Is he mentioned in any other accounts of Herod's life?
I'm reasonably confident, after some digging, that there are no other mentions of Manean in extant literature. This would appear to be the only mention of him.