One ruler of this name put down the initial attempts of Musa ibn Musa to establish autonomous rule for the Banu Qasi, though that ruler's son would later grant it.  Another ruler of this name is recorded to have impressed visiting dignitaries by using standing bowls of mercury to reflect sunlight, and that ruler of this name supposedly exhumed and crucified the corpse of an eleven-year-dead enemy after putting down one rebellion.  A ruler of this name defeated a rebellion led from Bobastro by ib
One ruler of this name put down the initial attempts of Musa ibn Musa to establish autonomous rule for the Banu Qasi, though that ruler's son would later grant it.  Another ruler of this name is recorded to have impressed visiting dignitaries by using standing bowls of mercury to reflect sunlight, and that ruler of this name supposedly exhumed and crucified the corpse of an eleven-year-dead enemy after putting down one rebellion.  A ruler of this name defeated a rebellion led from Bobastro by ibn Hafsun, and a de facto ruler of this name known as Sanchuelo was the second son of the regent Abu Amir al-Mansur, and was killed for attempting to seize the throne of Hisham II.  The third ruler of this name was defeated at Simancas by Ramiro II and built the royal city of Madinat al-Zahra, and that ruler took the title al-Nasir when he proclaimed himself caliph in 929.  The first ruler of this name fled from Damascus when his family was massacred by the Abbasids, and eventually established a new emirate in al-Andalus.  For 10 points, give this name shared by several Umayyad rulers who governed from Cordoba and presided over the golden age of Muslim Spain.
One ruler of this name put down the initial attempts of Musa ibn Musa to establish autonomous rule for the Banu Qasi, though that ruler's son would later grant it.  
{Abd al}-{Rahman} [or {Abd ar}-{Rahman} or other reasonable {transliterations}]