I know that someone survived, it was Maria Nicholaevna Romanov. After the murder she was transported from the truck by an old woman, ho was the trainkeeper. Then Maria built her live up as 'Granny Alina'. The DNA coouldn't be tested because it was too old, but the photo's were clear and profssors from HARVARD said that 'Granny Alina' is indeed Maria, the would buried her with her family, but instead of that, she was buried in a nameless grave in South Africa. I know this from a documantary.