As a Mennonite, I am particularly interested in finding famous relatives who are unlikely descendants of Amish/Mennonite/Anabaptists, such as Elon Musk, whose ninth-great-grandfather was a Mennonite bishop named Hans Herr [Herr-99] (through the Haldemans). Bishop Hans Herr is my eighth-great-grandfather.
But he also has a Mennonite connection on his father's side. His grandfather Musk had a sister-in-law, Martha Hartogh Musk [Hartogh-8], whose ninth-great-grandfather, Martin Oberholtzer [Oberholtzer-21], was a Mennonite who was an Anabaptist martyr. This Martin Oberholtzer is also my ninth-great-grandfather on both my mother's and father's sides.