They claim descent from Sidi Ahmed al-Reguibi, an Arab Islamic preacher from Beni Hassan who settled in Saguia el-Hamra in 1503.Sidi Ahmed al-Reguibi claimed sharifian descent which attracted many disciples - a lot of whom of Sanhaja origin - from his wanderings between the valleys of Draa, El-Gaada and the Saguia el-Hamra.[10][11] The grazing lands of the Reguibat fractions extended from Western Sahara into the northern half of Mauritania, the edges of southern Morocco and northern Mali, and large swaths of western Algeria (where they captured the town of Tindouf from the Tajakant tribe in 1895, and turned into an important Reguibat encampment).[10][11] The Reguibat were known for their skill as warriors, as well as for an uncompromising tribal independence, and dominated large areas of the Sahara Desert through both trade and use of arms.[8] According to the tribe's genealogists, Sidi Ahmed al-Reguibi married a woman of the Sellam called Kaouria Mint Mohammed.