Possible Clues:

• Lie in cage being poetically mournful
• Like a poem, say, Alice composed about
• Even less reliable than Jack Dawkins?
• Like work done in a churchyard?
• Mournful like a sorrowful poem
• Sad about eg Celia or Alice
• Mournful English adopted by version of Gaelic
• Mournful or sad as poem may be
• Mournful English member, one with a cold
• Gray mood caused smart worker to leave 1 ac.