Possible Clues:

• Fifth-century pope called "the Great"
• Fifth-century pope with the epithet 'the Great'
• Fifth-century pope dubbed 'the Great'
• Univ. near Tampa
• Following
• 'Great' pope celebrated on Nov. 10
• Pope who persuaded the Huns not to attack Rome
• Religious leader who met with Attila the Hun
• Fla. University named for a pope
• Fifth-century pope called 'the Great'