Daylam

Daylam (Persian: دیلم), also known in the plural form Daylaman (دیلمان) (and variants such as Dailam, Deylam, and Deilam), was the name of a mountainous region of inland Gilan, Iran. It was so named for its inhabitants, known as the Daylamites.

The Church of the East established a metropolitan diocese for Daylam and Gilan around 790 under Shubhalisho.

36°53′20″N 49°54′20″E / 36.8889°N 49.9056°E / 36.8889; 49.9056