Tradition and old records assert that southern Somalia, including the Mogadishu area, was inhabited very early by hunter-gatherers. Although most of these early inhabitants are believed to have been either overwhelmed, driven away or, in some cases, assimilated by later migrants to the area, physical traces of their occupation survive in certain ethnic minority groups inhabiting modern-day Jubaland and other parts of the south. The latter descendants include relict populations such as the Eile, Aweer, the Wa-Ribi, and especially the Wa-Boni. By the time of the arrival of peoples from the Cushitic Rahanweyn (Digil and Mirifle) clan confederacy, who would go on to establish a local aristocracy, other Cushitic groups affiliated with the Oromo (Wardai) and Ajuuraan (Ma'adanle) had already formed settlements of their own in the sub-region.