I think I am fairly obsessed with Russian Royal History and read everything I can get my hands on! The whole era and the characters from Alexander II up to the Revolution is fascinating to me (plus it is a lost world of the way people lived in those days, particularly wealthy people).
There never seems to be a lot of information to be had about Grand Duke Michael (murdered by the Bolsheviks) who takes my fancy(!)

, and I would love to know more about his wife Natalie (Countess Brassova) and how she lived and what she did after Mikail died. I know she was in reduced circumstances in Paris after the Revolution...