Glad to have another 3/6 - wasn't optimistic when I started answering
1) :) Nickelodeon. Learn something new every day! At first I was thnking penny also, then turned to Nickel,,, and know that overseas they are sometimes called odeons.
2) :) Emma. Had no idea when these were written and wasn't thinking it would be a "squire" but I know Emma is meddlesome
3) :( Motown. Glad to be in good company here.
4) :) Panic. Seemed right but wasn't sure..
5) :( Nero. Couldn't think of any emperors, and definitely not any French ones.
6) :( Maxwell. Didn't actually think that was a baseball player. My only other guess was Yogi Berra but thought that was too early for him.