Related Clues:
- Government policy leaders
- Industry moguls
- Bygone Russian royals
- Pre-1917 monarchs
- Peter and Ivan
- Nicholas II et al
- Peter the Great and others
- Rulers before the Bolsheviks
- They lived in Russia's Winter Palace
- Industrial magnates
- Makeup of a long Russian line
- Russian autocrats of old
- Old Bulgarian emperors
- Some old rulers
- Rulers, slide rules, algebra, statistics, trigonometry — all initially rejected