The Church of the East metropolitan bishop Joseph of Gazarta is attested to have resided at Ḥaṣṣen (today called Kösreli) in 1808 after he had been forced to abandon his normal residence at the Monastery of Mar Isaac of Nineveh due to war.[7] In this year, he copied a manuscript at the Church of Mar Mūshe at Ḥaṣṣen for a Christian woman called Alpō.[8] In a letter from the American mission at Urmia in 1877, they claimed to have converted the village's priest and it is mentioned in 1881 that it was inhabited by 25 Protestant families who had converted along with their bishop, as well as four or five families who adhered to the Church of the East.[9]
According to the list presented to the Paris Peace Conference by the Assyro-Chaldean delegation, Ḥaṣṣen was inhabited by 300 Assyrians in 1914, at which time they were tenants of the Aghas of Şırnak and Silopi.[10] Amidst the Sayfo, most of the villagers were massacred, including the Presbyterian pastor and the Church of the East priest, whilst some survivors found refuge at the nearby Kurdish village of Gerçulaye.[11] In 1918, the village was inhabited by 420 Assyrians.[12]