Al-Mamun of ToledoYahya ibn Ismail al-Mamun was the second ruler of the Berber Hawwara Dhulnunid dynasty who was king of the Taifa of Toledo between 1043 and 1075.BiographyYahya ibn Ismail succeeded his father Ismaïl ibn Dhi 'l-Nun in 1043. He died at Córdoba in 1075.