 Between their arrival in Jabal Hauran in the middle to late 19th century until 1963, the Bani al-Atrash was the most prominent clan in Jabal Hauran's social hierarchy.They were divided into three sub-clans, the Bani Isma'il, Bani Hammud and Bani Najm.They were based in the southern half of the mountain, inhabiting or controlling 16 towns and villages