Chamberlain to king Herod Agrippa I. (Acts 12:20). Such persons generally had great influence with their masters.
Acts.12: And Herod was highly displeased with them of Tyre and Sidon: but they came with one accord to him, and, having made Blastus the king’s chamberlain their friend, desired peace; because their country was nourished by the king’s country.