Stu, Cupid was the response to question #9 that I was originally thinking of, though Venus is also correct. In Roman mythology, Venus is Cupid's mother. But I can't remember who's Cupid's father...

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Also, Stu thanks for your list of single name folks & characters.
I recognize all the names on that list except Offa and Segovia.

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And does "Thatcher" refer to Margaret Thatcher, the UK's first female Prime Minister?

I guess the last names of most politicians could be on this list, though Senator Hillary Clinton is known by her first name and not her last name. I suppose that's because the last name "Clinton" is too closely associated with her husband, former President Bill Clinton.