Merry Christmas, Noah!!!

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Across
  1. 2. Father of modern linquistics
  2. 7. 'D' in the D.E.N.N.I.S. system
  3. 8. Nayef Al-Rodhan's security principle
  4. 9. Battle at Manassas
Down
  1. 1. What number settlement was Dover?
  2. 2. Motorcycle gang in True Detective-Iron___
  3. 3. Jiātíng
  4. 4. Number of legs a lobster has
  5. 5. Kant's type of peace
  6. 6. The bumps on Legos are called...