which kingdom did he rule?
Epirus, Macedonia
Pyrrhus of Epirus
Pyrrhus became king of Epirus in 306 BC at the age of 13, but was dethroned by Cassander four years later. He saw action during the Wars of the Diadochi and regained his throne in 297 BC with the support of Ptolemy I Soter. During what came to be known as the Pyrrhic War, Pyrrhus fought Rome at the behest of Tarentum, scoring costly victories at Heraclea and Asculum. He proceeded to take over Sicily from Carthage but was soon driven out, and lost all his gains in Italy after the Battle of Beneventum in 275 BC.

Pyrrhus seized the Macedonian throne from Antigonus II Gonatas in 274 BC and invaded the Peloponnese in 272 BC. The Epirote assault on Sparta was thwarted, however, and Pyrrhus was killed during a street battle at Argos.
who was philitas of cos? He was a scholar and poet during the early Hellenistic period of ancient Greece what does the period refer to? It covers the period of Mediterranean history between 323 BC and 30 BC. can you name any other notable people from that era? Pyrrhus of Epirus, Euclid what was the first one? Greek king and statesman of the Hellenistic period.
wiki:13605642
Pyrrhus of Epirus [SEP] Introduction
Pyrrhus (; , "Pyrrhos"; 319/318–272 BC) was a Greek king and statesman of the Hellenistic period. He was king of the Greek tribe of Molossians, of the royal Aeacid house, and later he became king (Malalas also called him toparch) of Epirus. He was one of the strongest opponents of early Rome. Several of his victorious battles caused him unacceptably heavy losses, from which the term "Pyrrhic victory" was coined. Pyrrhus became king of Epirus in 306 BC at the age of 13, but was dethroned by Cassander four years later. He saw action during the Wars of the Diadochi and regained his throne in 297 BC with the support of Ptolemy I Soter.