Since we have already moved on, for anyone who is interested, the grandson of Nebuchadnezzar, and the answer to my unanswered trivia question, is "Belshazzar" .. see Daniel 5. He was the evil grandson of King Nebuchadnezzar.
The somewhat tricky part is the fact that Belshazzar refers to Nebuchadnezzar as his "father" in Daniel 5, but what he was actually saying in Hebrew was "ancestor", instead of "father".
Nitocris is both the daughter of Nebuchadnezzar and the mother of Belshazzar, just FYI.
~Deut