Possible Clues:

• Equivalent figure in work to advance food additive
• Counterpart of old Poe's 'Pit', revised edition
• Counterpart
• Person in similar position crazily bit me on purpose
• Work poet is developing with song for a counterpart
• Counterpart to Pope is converted, supported by cardinal
• China's position? One possibly equivalent
• E.g. ten to four on watch for counterpart
• Counterpart of drunken toper in some pub
• Nearly all anti freezing agent contains it, pal!