Possible Clues:

• Parrot in "Aladdin"
• To whom Brabantio says 'Thou art a villain'
• Lodovico calls him a 'Spartan dog'
• Villain in Othello
• 'Thus do I ever make my fool my purse' speaker
• Emilia's husband in 'Othello'
• "Othello" role
• Ensign positioned east of Santiago
• Shakespearean betrayer
• He betrayed Othello