Grand Duchess Pauline of Ostrova

In the short story Jane in Search of a Job, Grand Duchess Pauline of Ostrova is a young noblewoman from Ostrova. When visiting England she employs Jane Cleveland, who resembles her, to impersonate her as she is afraid of being attacked. It turns out that she was a criminal, and used Jane so that she wouldn’t get caught. At the end of the story, Detective-Inspector Farrell tells Jane that real Grand Duchess had run off with a chauffeur in Paris that morning.

Portrayals
In the episode Jane in Search of a Job of The Agatha Christie Hour, a TV film adaptation of the story, the part of the "Grand Duchess" who employed Jane Cleveland is played by Amanda Redman. The real Grand Duchess had been kidnapped in Paris earlier and kept in a house in the Ardennes forest.