What is "rahamna"

Rahamna ( Arabic: رحمنا) is an Arabic-speaking tribe of North African Arabs descent who settled north of the Sahara between the 13th and 15th centuries. In 1525, they mobilized with Mohammed esh-Sheikh to fight the Portuguese in Agadir, Mogador, Safi and Mazagan. In the second half of the 16th century, they inhabited a vast plain north of Marrakesh. They are brothers of the Yagout tribe, who still living in the Moroccan Sahara.