If anyone is familiar with it (I am but I CBA doing the legwork) there is a very helpful little application available with Kali Linux called Maltego, it may even be on Windows too. What this will allow you to do is feed it an email address and it will recursively search the whole internet for connections to that email address/Facebook profile etc etc. May prove useful for someone.......
https://en.wikipedia.org/wiki/Maltego