Kotyaion - A settlement in Phrygia also known as Cotiaeum - Cotyaeum - Kütahya
Kotyaoion was an ancient city in Asia Minor, on the site of modern Kütahya.

Under the reign of Byzantine Emperor Justinian I the town was fortified with a double-line of walls and citadel. In 1071 Cotyaeum (or Kotyaion) fell to the Seljuk Turks and later switched hands, falling successively to the Crusaders, Germiyanids, Timur-Leng (Tamerlane), until finally being incorporated into the Ottoman Empire in 1428. During this time a large number of Christian Armenians settled in the city, where they came to dominate the tile-making and ceramic ware production.

Modern location: Kütahya, Turkey

(1) Severus Alexander 222-235 AD
AE unit Cotiaeum
Obverse: laureate, draped and cuirassed bust right from behind; Μ ΑΥΡ СE ΑΛ_EΞΑΝΔΡΟС
Reverse: clasped hands; KOTI_AEΩN
Ref: BMC 66; Volume VI 5742