Ok, I've gotten a little further
I created a second administrator account, Admin1, and was able to delete that unwanted profile. Maybe I originally created that profile with administrator privileges and then accidentally deleted the user name? I don't know. It's history now.
The new problem:
I have that newly created account, Admin1, with administrator privileges. However, I want to rename it to Administrator like originally. When I try to either rename or create an account Administrator from Admin1, it tells me the account already exists. But, I see it nowhere---no User Name, no Profile named Administrator. I've even tried approaching this from Safe Mode (thanks patio).
It's had me stumped for a while now. Any ideas?