Note: Do not rely on this information. It is very old.
Iboguelans
Iboguelans, a small but fierce Tuareg (Berber) tribe, "the terror of the Sahara" (Duveyrier). They are a branch of the powerful Kel-Rhela family, and have their camping grounds on the western slope of the Ahaggar plateau, whence they swoop down on the caravans along the trade route between Timbuktu and the Twat Oasis. The Iboguelans belong to the noble class of Tuaregs, and consequently do no work, but hold in subjection the two servile Imesseliten and Iberberen tribes, who till the land, tend the flocks, and do all the manual labour. (H. Duveyrier, Les Tuareg du Nord.)