The Doppelganger, Isn't It?

There have been some true historical figures over the years that bought into this stuff. Abraham Lincoln, he and his wife, they had all kinds of interesting beliefs. But see, I take issue with some of these listed historically because they're more ghostly specters than real human doppelgangers. John Dunn's story is strictly by location. By location doesn't count. Percy by Shelley, he saw his doppelganger and died a few weeks later in a sailing accident. And then Catherine the Great's was pretty good too, right? Yeah.