Wasn't too bad after stumbling across "damnedest", two left that nobody else has difficulty with.
15a - Guinea Pilot. I've got - ?e?r?e
14d - Walter or Vane. I've got - h??r?e?
P.S.
Ive got 3d & 14a as leon and hester (anagrams)and 15a as antony (as in mark) but I'm failing to see the connection/wordplay with clues?