ANSWER: Abu Bakr
Explanation:
An ancient copy of the Quran found at the University of Birmingham may belong Abu Bakr. He was the first person to convert to Islam outside Prophet Mohammed's direct family. He also became the first ever Muslim caliph in 632. Radiocarbon dating found the copy of the Holy Book to be 1370 years old raising the chance it could be the oldest copy of the Islamic Holy Book in existence.