(), of Thessalonica, was an officer of Perseus, king
of Macedonia, and commanded, with Timanor, his light-armed troops in the battle in Thessaly,
in which the Romans were defeated, B. C. 171. In B. C. 168, after Perseus had been conquered at Pydna, Ion delivered up at Samothrace
to Cn. Octavius (the commander of the Roman fleet) the king's younger children, who had been
entrusted to his care. (Liv. 42.58, 45.6.)