In our present age of ubiquitous information, it’s easy to search for the biography of a celebrity or politician, since history is better preserved now than ever before. Alas, it was not always this way. The facts about many historical figures weren’t written down until years — sometimes decades or even centuries — after they allegedly lived. Given this amount of time, the evidence of the individual’s existence itself may have completely deteriorated, aside from the stories themselves. Here are some famous people whose names you will recognize but who may never have existed at all, at least in their popular form.