The surname Haenicke is not very common in this world. Today only app. 200 Haenicke's (original spelling) are known.
The first ancestor in my family tree so far is Johann Gottfried Haenicke who married Hanne Wilhelmine Schulze. I was not able to find any dates for these two. They had a son Georg Albert Haenicke, born April 24th, 1829. Georg married Auguste Amalie Koch on March 25th, 1855 in Neuendorf. They had three sons - Paul Albert, Franz, and Wilhelm - and one daughter Emilie. Paul Albert was my great-grandfather.
I would appreciate any help and would like to share everything I found so far.