Karl F. Kannenberg is my 3 great grandfather and August is my 2 great grandfather. August and Wilhelmina had a daughter named Mathilda (she was #4 or #5 child. She was my great grandmother. She married Carl Mueller and they had 16 children, 14 of whom grew to adulthood. My grandmother was in the middle and named Theresa Lena Albertine. They moved to Minnesota around 1901. The older children stayed in Wisconsin and the younger came to Minnesota. Theresa married David Tetzlaff in Minnesota. They had 3 children. My father was Harold Tetzlaff.