They say that everyone has a twin somewhere in the world. Most of us will never come across that doppelgänger given the vast expanse of the world, but if you're a celebrity, your face is plastered everywhere and there are thousands of people who think they look like you. But what about people from the past? Whether it's a convict from the 1800's who looks like Justin Timberlake or an ancient pope who looks so much like Sylvester Stallone that you will be amazed, these celebrities have twins from the past that might make you believe in time travel. Enjoy!