'Chancellor' in the Bible

Rehum the chancellor and Shimshai the scribe wrote a letter against Jerusalem to Artaxerxes the king after this sort:

Rehum the chancellor, and Shimshai the scribe, and the rest of their companions, the Dinaites, and the Apharsathchites, the Tarpelites, the Apharsites, the Archevites, the Babylonians, the Shushanchites, the Dehaites, the Elamites,

The king sent an answer to Rehum the chancellor, and Shimshai the scribe, and the rest of their companions that dwell in Samaria, and the other places beyond the river: Peace, and so forth.