Was Newman's first name ever mentioned anywhere in Seinfeld? I don't recall anybody calling him by any other name (except "Norman" by his girlfriend which was a mistake because she didn't know the name).
Or was the name always kept a mystery? (Whatever the reason)
Edit: I have assumed that Newman is the last name. But sanpaco says in the comment that Newman might as well be the first name. Well we never know. :-) In that case you can assume I am asking for his last name.