I am the descendant of August F. W Lemke who married Caroline Collies Prange and emmigrated to Cold Spring in Jefferson County, Wisconsin from Pomerania. Their son Karl August was my great-great grandfather and this information relates to your message.
My family has conducted some research and comparing it with yours, there are some inconsistencies which could possibly be from our side since I am not sure who provided the information. But, there is enough information which is the same, such as dates, places and names to verify we are speaking about the same family.
What type of information are you looking for?