John: I'm still looking for Tessmer's I have other information on Herman now. He was born in Lobsens, Posen, Preussen. His father's name was Michael and his mother was Charlotte Koenig, or Koernig or Kernig. We haven't been able to find anything on her after Herman was born. She may have died. She had another son, Eduard Gottlob, b. 1849, dau. Emilie Auguste, b. 1851, and dau. Bertha Amalie b. 1853. The girls came to US in 1871 but we can't find where Eduard did. Eduard , Emilie and Bertha were all born in Vandsburg, West Preussen, Preussen. There are more children by another wife that brought all to US. As I have said, Herman and Michael came in 1870. Herman was married in LaSalle county, IL in 1874. Is any of this familiar with your line?