Abd al-Rahman III
Umayyad ruler of al-Andalus (912–961) who proclaimed himself caliph in 929; under him Córdoba became the largest and most splendid city in western Europe
When he inherited the emirate from his grandfather, al-Andalus was split by rebellions, which he put down one by one to reunite the state. In 929 he proclaimed himself caliph in rivalry with the Fatimids of North Africa. He built the splendid palace city of Madinat al-Zahra outside Córdoba and received embassies from Byzantium, the Holy Roman Empire and others. Keeping the northern Christian kingdoms in check, he ruled for nearly fifty years.