Department of Small World - Degrees of Separation Division

After I did the post, I sent an e-mail to James Grimmelmann (see below) and mentioned that a very smart history Ph.D. candidate named Jan Grimmelmann graded my first history paper in the fall of 1973 at the University of Michigan, and was and is a long time friend of one of my best friends, Andy Achenbaum (Houston - History, Gerontology, Social Work), and was he related? 

James:  "yes, she is my mother."

Wow.