"People" has indeed evolved into a loose set of parameters. Generic phrases, song titles with people's names in them, and other "loose" definintions are now common. Still, there's occasionally some outright violations. But since we're not playing for money....
Don Wall
Charles Walgreen
J. Milton Eckerd
Up for review of rules.
Proper Names are obviously OK
Band Names?
Characters from Films, TV, Literature or Songs?
A phrase that refers to a specific person, be they real or fictional?
Do all three names need to be a part of a single theme, or does the theme only need to connect from one name to the next?