Ibn Athir
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Ibn Athīr is the family name of three brothers, all famous in Arabic literature, born at Jazīrat ibn Umar[1] (today's Cizre nowadays in south-eastern Turkey) in upper Mesopotamia. The ibn al-Athir brothers belonged to the Shayban lineage[2] of the large and influential Arab tribe Banu Bakr,[3][4] who lived across upper Mesopotamia, and gave their name to the city of Diyar Bakr.[5][6]