Islamsor is a village located approximately 16 km west of Kars in Turkey. The Center of Asia Minor Studies places it under the jurisdiction of Kars. Its residents were refugees from Cheriana (Χεροίανα) which is in the Chaldia region of Pontus. In 1913 it had 643 residents. It had a church and a 3 grade Greek primary school. After 1920, its residents settled in Greece in regions such as Kilkis, Anargyrous in Florina, and Koufalia in Thessaloniki. It's believed Islamsor is today's Aydinalan Koyu.
Map Source: www.kafkasios-pontokomitis.blogspot.com
Reference: Encyclopaedia of Pontian Hellenism .Malliaris Paedia