Анастасия Николаевна
Anna Anderson attempted to prove she was Grand Duchess Anastasia Nikolaevna of Russia, the lost daughter of Nicholas II, but DNA testing on her remains eventually proved her to be an impersonator. Although she did not claim the throne, "per se", as women could not succeed to the Russian throne so long as any male dynast survived, she became more famous than any of the various Romanov claimants to the throne.