Anna Anderson
From Tardis Wiki, the free Doctor Who reference
Anna Anderson was a woman claiming to be Anastasia Romanov. One account held that a DNA test proved that she wasn't. (PROSE: The Death of Empire) However, another account suggested that she was, in fact Romanov, and was placed back into linear time as punishment for betraying Faction Paradox, cursed to be seen as an imposter. (PROSE: The Book of the War)