Related Clues:

• Mexicali Mr.
• Southern lady's salutation, stereotypically
• Army address
• Lady's address?
• Polite term of address
• Camelot honorific
• Monsieur, across the border
• Mr. abroad
• Dear one?
• Elton John's title
• Miss alternative
• See 61-Across
• William Penn, for one
• Hat-tipping word
• Churchill, for one