The ʿĀmirids (or Banū ʿĀmir) were the descendants and Ṣaqlabī (Slavic) clients of the house of the ḥājib ʿĀmir Muḥammad al-Manṣūr, the de facto ruler of the Umayyad caliphate of Córdoba from 976 until 1002. A series of ʿĀmirid dictators were the powers behind the caliphal throne during the long reign of Hishām II. Four ʿĀmirid dynasties were established during the period of taifas (petty kingdoms) that followed the collapse of the caliphate: Valencia, Dénia, Almería and Tortosa.[1][2][3]