Errol's Xmas crossword

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Across
  1. 2. It takes one to catch one, according to Alonzo.
  2. 3. Island south of St Vincent, east of Aruba
  3. 4. Unusually funky music?
  4. 5. Hieroglyphics may have been invented by him, according to Harry.
Down
  1. 1. Andrew Watson, Arthur Wharton, Walter Tull