illustrious russian

• светле́йший

  brightest, clearest, lightest

  most serene, most illustrious

• просла́вленный

  famous, celebrated, illustrious, renowned

• достосла́вный

  glorious, illustrious, renowned, celebrated

• ясновельмо́жный

  serene, illustrious

• блиста́вший

  shining, glittering, sparkling, gleaming, brilliant, illustrious