Related Clues:

• Pre-1917 ruler
• Nicholas was one
• Figure in a Rimsky-Korsakov opera
• Russian autocrat
• Bygone leader
• Nicholas I or II, e.g.
• Opera 'The Tale of ___ Saltan'
• Nicholas or Alexander
• Paul I, e.g.
• Pre-Soviet royalty
• Nicholas II, e.g.
• Alexis, e.g.
• Winter Palace dweller, once
• See 33-Across
• Peter the Great, e.g.