"I am not the Dread Pirate Roberts," he said. "My name is Ryan. I inherited this ship from the previous Dread Pirate Roberts, just as you will inherit it from me. The man I inherited it from was not the real Dread Pirate Roberts, either. His name was Cummerbund. The real Roberts has been retired fifteen years and living like a king in Patagonia." Then he explained the name was the important thing for inspiring the necessary fear. You see, no one would surrender to the Dread Pirate Westley.
Villainous identities that have been used by more than one character; usually these are Comic BookSupervillains and names and/or titles are often passed down through generations in Families. A Legacy can also be inherited through someone taking an alias from its current bearer by force if necessary.