Related Clues:

• '___ Blue?' (1929 #1 hit)
• Pre-1917 ruler
• Nicholas was one
• Figure in a Rimsky-Korsakov opera
• Start of Cain's query
• Russian autocrat
• Bygone leader
• Bon ___
• Friend en francais
• '___ the only one?'
• Nicholas I or II, e.g.
• French friend
• Aramis, to Athos
• Opera 'The Tale of ___ Saltan'
• Nicholas or Alexander