Possible Clues:

• _____ Borden (Prime Minister 1911 to 1920)
• With 60-Across, player of Tony Soprano's son
• -- the Bruce, king of Scotland from 1306 to 1329
• Item of formal attire right for chap
• and 19: Up a gum tree, finally gone -- criminal mainly describes this politician
• Dress right for a boy
• De Niro or Duvall
• 'Rules of Order' writer
• — the Bruce
• Abstract Expressionist Rauschenberg