This was fun, if fairly easy.
But I'm not done yet....one theme pair to solve, 32/17.
It would help to know if 35a is ASAIL, it's a very obscure clue if so!?
35a Employing sails furled and helm lashed a-port? (5) I have A???L
Spectator 2317-370
Birthday greetings indeed. Thanks for this and the pleasure given by other puzzles. A great deal of research was needed to complete on this occasion.
Solved all the clues. I'm afraid the names of some of the people alluded to in the unclued cells are eluding me. I can see a famous guitarist who was born on 19th July of the appropriate year. Is it the same day, month or year as doc? Seems like a very wide field, and, to be honest, too much Googling for my taste, so it goes in the bin unfinished. Shame.