Edy, thanks for the reply. According to information I have, Wilhelmina was born in Germany in 1866 and came to Berlin, WI as a young child. Maybe the family wasn't here yet in 1870. I'm not sure. After her marriage she spent her entire life in Stettin.
I'm also interested in the name Seehafer, as that is my grandmother's maiden name. Her father's name was August, born in Germany in 1841 and came to the same area of Wisconsin as a young man. He died in 1917. Is there any mention of him in your Seehafer tree?