[JdeBP]

Easily locatable under that name. The Daugherty is the late Richard D. Daugherty, who was Professor of Anthropology at Washington State University.

[Dalewyn]

Googling for "Daugherty's Law" only returns law firms, and a cursory reading up on Richard Daugherty doesn't seem to indicate anything of the aforementioned.

So, yes, would appreciate a citation so we can all learn a new trivia of the day.

[turnsout]

Yeah, seems like something a professor said one day in class but never published.