Fannu bint Umar ibn Yintan (died April 1147) was a princess and a Commanding officer of the Almoravid dynasty.
In the guise of a man, wearing armour she participated in the defense of the citadel of Marrakesh[1] during the Almohad conquest of the city in 1147.
Her future role was not strange, as women in Almoravid Morocco had a higher status than what was otherwise normal in Muslim states.
[3] In March 1147, the forces of Abd-al Mumin, successor of Ibn Tumart and founder of the Almohad Caliphate, reached the capital of Marrakech during his jihad against the Almoravid dynasty, broke into the town and battled over the control of the qasba (fortress) of the Almoravid Palace for days.
[4] The Almohads were reportedly astonished by Fannu's conduct and bravery during the battle, and surprised that they had not realized that she was a woman before she died.