that was the name thereof

how many names do we have?
in all the nationalities of this world. do we have two names, our name and our parents name? and what's with a third name in the middle that no one knows? is this international, across galaxies, time dimensions and parallel universes? How many passports do you own? multiple countries or multiple names? when was the last time you changed your name? frequently? do you exist anymore? how many questions are there? do you have different names for different episodes of existance? i'm a one name guy, at least at any one time.