I am stuck on 17 down - Former king raised by small Persion King (6 letters). I have X?R?E? and am fairly certain that these letters are correct. The answer is (presumably) the name of a king but I cannot find one begiining with "X" that fits in. Any suggestions would be most welcome.
Many thanks to all of you for your lightning responses. Now that you mention the name it rings a vague bell. Perhaps it was an answer in an earlier crossword. I shall make a note of it in case it comes up again. It's obviously no good relying on my memory and if I couldn't find it this time, there's no reason to think I would be able to find it in the future!