"Von" isn't a first name, it's German for of/from. Same with the Dutch "Van", the Italian "da", the French "de" (though that one might mean "the ", I'm not sure) and several other examples from different languages
It took me a minute, they really resemble each other pretty closely. She probably gets confused with Bismarck alot. I bet people are telling her all the time, "Has anyone ever told you that you look like Otto von Bismarck?" and everytime she has to pretend like it's the first time she's ever heard that and thank them for the compliment, but inside she's like, "Goddamnit."
What? How? Many say had Bismarck lived long enough, he could have prevented the First World War. He orchestrated the Scramble for Africa to prevent another war of European empires with each other. But that being said, he could have prevented a war at the expense of non-European nations. Bismarck is a boon for Europe but not for the rest of the world.