Possible Clues:

• Welliver of "Bosch" and "Bosch: Legacy"
• Upper-class scholar primarily associated with bird book
• Shakespeare's "— Andronicus"
• Roman emperor uplifted hearts, perhaps -- about time
• American singer’s first book
• Emperor who completed the Colosseum
• '-- Andronicus'
• Shakespearean title character or New Testament epistle
• Groan, perhaps, as persistent ringing's not got hold of pub
• Flavian dynasty ruler