Q: What's the connection?
A: As I understand it, my great, great, great grandfather Anthony Grimm owned a riverside store there in the late 19th century. It first appeared on the US census around 1890, with a population of fewer than 100 people. I'm not sure that it's much larger now.
Q: Are you related to ... ?
A: Probably not, if their last name is Grimm. Aside from my brother & dad, nobody closer than a fourth cousin shares my last name. I do believe that I'm related to another "Andrew Grimm" born the same year as me in Richmond, Indiana, though. That's pretty weird.