Found this nut job on facebook today! claims to be the granddaughter of Tatiana and that she (her name is Alexandra) is returning to Russia to take the throne. She posted on one of the pictures that Tatiana lived because she wasn't even there that night.
Sounds like this person read The Tsarina's Daughter (the plot which says Tatiana was substituted by someone else and the guards were clearly too dumb to notice).
So she's going to Russia to take the throne, eh..
Putin: Who are you?
Alexandra: I'm the granddaughter of the Grand Duchess, Tatiana.
Putin: Sure you are! **under his breath** Oh God, not another one.
Alexandra: I'm here to claim the Russian Throne
Putin: Very well. I'll call some men in some white coats to escort you to the palace.