Possible Clues:

• Shakespearean crustacean I'd eaten up
• Shakespearean court with detectives about
• Prevent Richard speaking like a poet of old
• Characteristic of a poet turning grey at 99
• To the pub the hundreds I see, come in poetic manner
• Cab ride, mostly drunken, of a Welsh poet
• Sounds as if Richard in the pub is a bit like and old poet
• Like an Eisteddfod poet
• Poet's in pub, having wherewithal for gambling, but running short
• Like an ancient poet