I grew up in Madison, WI, son of Vern Dahlem & Helen Hunt Dahlem. My paternal grandfather was Adam Dahlem, his wife,who died in 1916, long before I was born, was Olive Mills. As I understand it, Gerhard Dahlem, founder of this branch of family, was Adam's grandfather. The Michigan & Oklahoma Dahlems, I think, are descended from two of Gerhard's other sons. My Dahlem aunts & uncles are/were part of the "Illinois Dahlems." If anyone wishes to communicate with me, I'll be happy to fill them in, best as I can, on locxation of my aunts, uncles & cousins on Dahlem side.