Perinthus

Perinthus or Perinthos was a great and flourishing town of ancient Thrace, situated on the Propontis. According to John Tzetzes, it bore at an early period the name of Mygdonia . It lay 22 miles west of Selymbria, on a small peninsula of the bay which bears its name, and was built like an amphitheatre, on the declivity of a hill. Its site is near modern Marmara Ereğlisi, in Turkey.
It was originally a Samian colony, and, according to George Syncellus, was founded about 599 BC. German archaeologist Theodor Panofka, however, makes it contemporary with Samothrace, that is about 1000 BC. It was particularly renowned for its obstinate defence against Philip V of Macedon At that time it appears to have been a more important and flourishing town even than Byzantium and being both a harbour and a point at which several main roads met, it was the seat of extensive commerce. This circumstance explains the reason why so many of its coins are still extant from which we learn that large and celebrated festivals were held here.
After the fourth century AD it assumed the name of Heraclea or Heracleia ; which we find sometimes used alone, and sometimes with additions Heraclea Thraciae and Heraclea Perinthus.

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