Try as I might I cannot get my head around the last clue :
Setter finishes off puzzle book (4) ?E?K (N.B. The setter's name is Puck if that has any bearing on the matter). I have considered all of the possibilities and I cannot get a word with the right meaning associated with that clue.
Thank you Quizmonkey. The penny has finally dropped ! There were three phrases associated with "blessed" and I had the other two but completely forgot about the third. What a wally !