 The Banu Ubayd Allah descended from Ubayd Allah ibn Sahir (or Saqil), son of the Maqil forefather.They were the biggest sub-group of the Maqil and lived as nomads in the southern hills between Tlemcen and Taourirt.In their nomadic travel they reached as far as the Melwiya river in the north and Tuat in the south.