Possible Clues:

• Fat Pole carrying cask
• Bulbous
• Quite chubby
• Podgy about right, ultimately?
• Like a sphere
• Plump fellow carrying large beer cask
• Most of the fish in bar with stout
• Plump type loses rag in Grand Tour
• Plump finally for Oxford after vacation drinking much ale
• Pole drinking cask of booze becomes corpulent