" When Miss Emmie was in Russia English Governesses before, during and after the October Revolution" by Harvey Pitcher is about English Governesses in Russia working for the Upper classes in Imperial Russia.
There is mention of Helen Pinkerton Marguardt who was the English Governess of Grand Duke Nicholas, the father of Grand Duke Nicholas( Nikolasha) and Miss Eager. Even ClaireClairmont, the former mistress of Lord Byron and the mother of his daughter Allegra, was an English Governess in Russia.
Anyway, I found the book years ago while living in England and had forgotten I had it til I found it with some books that I had packed away.
It's an interesting read if anyone finds a copy of it.
Kyra