Richard Castle: Oh, before I forget... what did Penny say about Alexander?
Kate Beckett: Oh, nothing. Just some silly stuff that didn't make any sense... Why?
Richard Castle: Because my middle name is Alexander.
Kate Beckett: I thought your middle name was Edgar?
Richard Castle: Been perusing the personal section of the Richard Castle website again, have we? No, I changed my middle name to Edgar, for Edgar Allen Poe, back when I changed my last name to Castle. My given name is Richard Alexander Rogers.