Anastasia the last grand dutchess of Russia was the only girl in her family to survive execution. Scientists who have  done DNA tests on the Romanovs' remains have proof that the tsarvitch and Anastasia were missing. My theory is that when they were shot they pretended to be dead and then they rose from their coffins and ran away. Despite what the Disney movie says I doubt that Ratsputan rose from the dead and tried to kill Anastasia, even if he was a charlatan.