who is it?

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Across
  1. 1. her name rhymes with maiden
  2. 4. has been rock climbing
  3. 6. the founding pioneer
  4. 8. the GOAT
  5. 10. the most fabulous
  6. 11. also known Beves
  7. 12. knows everything
Down
  1. 2. is the newest pioneer
  2. 3. quit possibly the tallest
  3. 5. makes really good cupcakes
  4. 7. recently won 12 pars of socks
  5. 9. can speak Spanish