Possible Clues:

• Piece on all four corners in 7-Down
• Man with staff blowing top
• Black bird heading away from stream
• Chisel
• One stuck in a corner
• It might threaten the king
• What's locked away in Carisbrooke castle
• Swindle a man moving over rank and file
• Villain beheaded bird
• Man deployed in rank-and-file movements