Ahmad ibn Fadlan

Full name: 
Ahmad ibn Fadlān ibn al-Abbās ibn Rāšid ibn Hammād
Arabic name: 
أحمد بن فضلان بن العباس بن راشد بن حماد

Writer and traveler who wrote an account of his travels as a member of an embassy of the Caliph of Baghdad to the king of the Volga Bulgars.