During signup, your username is restricted in the fact that you can't use numbers or other characters. I don't remember my account name, and I didn't have an email linked to it. How am I supposed to figure out what the display name is? I know I may be asked to call support, but even then how are they supposed to help me when I don't know the display name and don't have an email on it. Basically, all I can remember is that he was an Imperial spy or operative, and I remember having a ship. But that is about as far as my memory goes... the display name is probably dragon something but I cant be sure.
I would just make new account myself and make new memories