Related Clues:

• Bluebonnet
• St. Andrews golf club member, typically
• Glaswegian, for one
• Celtic speaker
• Highlander or Celt
• Philosopher David Hume, for one
• Uncle Scrooge, for one
• Macbeth, e.g.
• Robert the Bruce subject
• Dumbarton denizen, perhaps
• Athlete from St. Mary's College
• 'Nae' sayer?
• Speaker of 18-Down
• Sean Connery, nationally speaking
• One who may converse in Erse