Grandad's 80th Birthday Puzzle

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Across
  1. 2. A king and also a potato
  2. 3. The month in which the smartest people are born
  3. 6. Grandad's favourite sport?
  4. 7. If you went to Singapore, what is Raffles?
  5. 9. Lives in the Himalayas
  6. 10. Gilbert O'Sullivan sang about her
  7. 12. Two divided by two gives this answer
  8. 13. It is a good one of these from me and a good one from him
  9. 15. A pirate is always looking for this
  10. 16. A dog, a ball and an actor called Richard
  11. 19. A mouse lived in a Windmill here and wore clogs
Down
  1. 1. The city of lights
  2. 4. The currency used in Italy
  3. 5. Not quite thirty
  4. 8. Short for Esmeralda?
  5. 11. The opposite of both dark and heavy
  6. 14. Is it a planet or just a cartoon dog
  7. 17. Our sun is just one of these
  8. 18. A yellow fruit without the 'ba'