I know nothing about the Lange family on my end. Therefore, there could be a connection between your Lange and Berger families and mine. I only have info that a Minnie Lange from possibly the Elgin, Il, area married a Knaack. The Knaack family was/is from the McHenry County, Il, area which is just south of Walworth County, WI, area into Illinois. The Berger family I have much more on, but none that I can tell married an Augusta. I will post a response if/when I find something. Hey, you never know.