Related Clues:

• ___ Andronicus (Shakespeare's mad general)
• Emperor who completed the Colosseum
• Formal attire covers shirt on this chap's back
• Paul's pen-pal getting his oats, say?
• An emperor's birds without superior
• Flyer not working on book
• Groan from one flying to America
• Boob by the Guardian brings letter from Paul
• Book to raise hearts, perhaps, over time
• Emperor having clothes brought back? About time!
• Arch-emperor?
• Roman emperor with arch
• Roman emperor — one of St Paul's correspondents
• Shakespearean title character or New Testament epistle
• Flavian dynasty ruler