Michelle Anches
Michelle Anches was a woman who claimed to be the Grand Duchess Tatiana Nikolaevna of Russia. In 1925, Anches headed to Denmark to meet with Grand Duchess Tatiana's grandmother, Maria Feodorovna. But Michelle was killed in her house, so the meeting never occurred. There are still unknown details about her death.
The remains of all members of the Romanov family killed at Ekaterinburg in 1918, including Grand Duchess Tatiana, have been discovered and identified through DNA testing, confirming Anches was an imposter.