After a brief Byzantine rule over Armenia between 1045 and 1064, the invading Seljuks ruled over the entire region, including Tashir. However, with the establishment of the Zakarid Principality of Armenia in 1201 under the Georgian protectorate, the Eastern Armenian territories including Gugark had significantly grown. After the Mongols captured Ani in 1236, Tashir became part of the Ilkhanate as a Mongol protectorate, and the Zakarids became vassals to the Mongols. After the fall of the Ilkhanate in the mid-14th century, the Zakarid princes ruled over Tashir until 1360 when they fell to the invading Turkic tribes.