Answer: TSARS

AnswerCrossword Clue
TSARSPeter and Nicholas
TSARSOld autocrats
TSARSAlexander and Peter
TSARSOld Russian heads
TSARSPowerful Romanovs
TSARSPre-1917 Russian rulers
TSARSNicholas I and II
TSARSNicholas I and II, e.g.
TSARSOld Russian oppressors
TSARSFeodor and Peter
TSARSOld Russian rulers
TSARSBygone Russian despots
TSARSRulers of old
TSARSRulers of yore
TSARSRulers until 1917
TSARSWinter Palace residents
TSARSOld dynasts
TSARSPeter the Great et al.
TSARSRussian rulers of yore
TSARSIvan the Terrible et al.
tsarsTSAR, an emperor or king, also CZAR, TZAR KSAR
TSARSRussian rulers
TSARSAlexis I and Ivan IV
TSARSPeter and Paul
TSARSPeter and Paul, but not Mary
TSARSBygone rulers
TSARSFormer Russian rulers
TSARSNicholas and Ivan
TSARSPre 1917 Russian rulers
TSARSRoyal Russians
TSARSRussian dynasts
TSARSNicholas and Alexander
TSARSSt. Petersburg bigwigs
TSARSOld Russian dynasts
TSARSRomanov rulers
TSARSWinter Palace rulers
TSARSPre-October Revolution rulers
TSARSBoris Godunov and others
TSARSRussian succession of yore
TSARSPre-1917 despots