Abd ar-Rahman I

Abd ar-Rahman I (Arabic, عبد الرحمن الداخل) aka Abd al-Rahman I, Abderraman I, "Falcon of Andalus" or "Falcon of the Quraish" (731-788) was the founder of the Umayyad Emirate of Córdoba, a Muslim dynasty that ruled the greater part of Iberia for nearly three centuries.

Abd ar-Rahman in "Islands in the Sea"
Abd ar-Rahman was the Caliph who sent a delegation in AD 769, to a heathen Bulgar Khan named Telerikh at the latter's request. The four emissaries were led by Jalal ad-Din and included Da'ud ibn Zubayr, a military officer, and Malik ibn Anas and Salman al-Tabari, the two both guards and aids. The purpose was to attempt to convert Telerikh and his people to Islam.