Wikipedia
Perrhaebi
The Perrhaebi were an ancient Greek people who lived in northern Thessaly. They took part in the Trojan War under Guneus and also fought in the Battle of Thermopylae. Their capital was Phalanna, and their most significant town, or polis, was Oloosson. Through most of their history they were overshadowed and controlled by Thessaly, although they had two votes at the Delphic Amphictyony. Philip II of Macedon freed the Perrhaebi from Thessaly and took their kingdom for Macedonian control, under which it remained until Roman conquest in 196 BC. They were listed in Xerxes' vast army by Herodotus. A coin of the Perrhaebi depicted a man restraining a bull on one side and a horse on the other.The inscription was "Περραιβών".