It was suggested last week that this puzzle might in some way be a celebration to mark the 300th puzzle by the current Everyman - I really don't think it is!
That's not to say there aren't some good clues, just that there are a few that leave me a tad perplexed.
12a - has this ever been used in the singular?
1a - I thought that maybe there was a another verse collection with the same first name but different second but, if there is I can't find it. So I think it must be referring to the D.... C..... - and yes, I know it's a T...... but that's not what it's called.
Also, and this isn't unique to this puzzle, but I've noticed a trend lately whereby clues indicating comparative forms are producing superlative answers.
Lastly, and this is a very minor gripe, but I'd have much preferred if the "a" in 6d was omitted - it makes a big difference.
Okay, now for the positives:-
9a - This was a difficult parse but a great clue and wouldn't have been out of place in a Prize or even some barred puzzles.
1d - I though this was a wonderful clue, both succinct and witty.
Thanks to Everyman.