Assyrian people
From the 7th century AD onwards Mesopotamia saw the arrival of Arabs, Kurds and other Iranian peoples, and later Turkic peoples. Assyrians were set apart, and then slowly became a minority in their own homeland. But they did remain in large numbers in Upper Mesopotamia as late as the 14th century, and the city of Assur was still in use by Assyrians during the Islamic period until the mid-14th century when the Muslim Turco-Mongol ruler Timur carried a mass murder against Assyrians in the name of Islam, and that is when the Assyrian population was greatly lessened in their homeland.