Their tribal ancestor, the famous Sidi Ahmed Al Aroussi (or Laaroussi, died in 1593, 30 km near to Semara in Western Sahara), descends from the Beni Arrous tribe neat Larache and comes from a lineage of the Alami religious order founded by Abu Bakr al-Alami al-Idrissi and Abd as-Salam ibn Mashish al-Alami.
Sidi Ahmed Al Aroussi (or Laaroussi), a famous tribal ancestor who perished in 1593 near Semara in Western Sahara, is from the Beni Arrous tribe close to Larache and comes from the lineage of the Alami religious order established by Abu Bakr al-Alami al-Idrissi and Abd as-Salam ibn Mashish al-Alami.