Question: Suzanna Catharina de Graaff's claim of being the fifth daughter of Tsar Nicholas II and Tsarina Alexandra, was accepted by one of several imposters who clamed to be who?
Sentence (from "Anna Anderson"): Anna Anderson (16 December 1896 – 12 February 1984) was the best known of several impostors who claimed to be Grand Duchess Anastasia of Russia.
Relevant evidence: Yes