[4][5] Pir Mansûr claimed to be a descendant of Mohammed and settled in the area from Hakkâri (around Sinjar Mountains) in 1049.
[6] During the rule of Emir Muhammed, the principality had expanded southward to Karaca Dağ, Palu and Elazığ northward, Çermik to the west and the area between Hani and Lice to the east.
[7] During the reign of the Marwanids, Kurds from the Humeydiye, Beşneviye and Zuzaniye tribes settled in Eğil changing the composition of the area to the detriment of the Armenian, Greek, and Syriac-speaking population.
It was during this period that Pir Mansûr settled in the town of Dicle which was populated by Kurds of the Mirdesan tribe.
However, when the Ottomans began losing land on the Balkan peninsula, it started recruiting men from Eğil ultimately ending its special status.