Koy Sanjaq is a town and district in Erbil Governorate in Kurdistan Region, Iraq. The name of the town is derived from "köy" and "sanjaq", and th…Koy Sanjaq is a town and district in Erbil Governorate in Kurdistan Region, Iraq. The name of the town is derived from "köy" and "sanjaq", and thus Koy Sanjaq translates to "village of the flag". According to local tradition, Koy Sanjaq was founded by the son of an Ottoman sultan who planted his flag and established a garrison at the site of a seasonal bazaar after having defeated a rebellion at Baghdad, and developed into a town as locals moved to the settlement to provide services to the soldiers. A Jewish community at Koy Sanjaq is first mentioned in the late 18th century, by which time it was already well established. The community had its own graveyard, and spoke both Jewish Neo-Aramaic and Sorani Kurdish. A small Chaldean Catholic community was established in the town in the 19th century. In 1913, 200 Chaldean Catholics populated Koy Sanjaq, and were served by two priests and one functioning church as part of the archdiocese of Kirkuk. The Chaldean Catholic Church of Mar Yousif was constructed in 1923.