Strabo: As one proceeds from the plain and the city [Pergamon] towards the east, one comes to a city called Apollonia, which lies on an elevated site, and also, towards the south, to a mountain range, and also, towards the south, to a mountain range, on crossing which, on the road to Sardeis, one comes to Thyateira, on the left-hand side, a settlement of the Macedonians, which by some is called the farthermost city of the Mysians. On the right is Apollonis, which is three hundred stadia distant from Pergamum, and the same distance from Sardeis, and it is named after the Cyzicene Apollonis.
The city was founded in the 3rd century BC by king Attalus I and named after his wife Apollonis.
See:
- Strabo. Geographica. xiii. p.625.4, The Geography of Strabo published in Vol. V of the Loeb Classical Library edition,
1928