Related Clues:

• Bygone title
• Feodor, e.g.
• Antarctic explorer Sir James
• Russian Revolution figure
• 'Friends' role
• Winter Palace ruler
• Nicholas I or II
• Ivan the Terrible, e.g.
• Bolshevik target
• Rimsky-Korsakov's 'The Tale of ___ Saltan'
• Olden despot
• Singer Diana
• Bygone ruler
• 'Mahogany' vocalist Diana
• 'ER' doctor