There could exist a link: I'm searching the DENNHARDTs of Apolda, but just beginning. My GGG-father Albert DENNHARDT was born in Dornburg near Jena (Saxonia/Thuringia) in about 1839 and lived in Apolda. He had five sons, one of them Walter DENNHARDT. Four of them went to America. My Walter was born in 1872 or 1873 and arrived at New York in 1905 from Apolda and 15 Jul 1909 from Lundenburg/ Moravia with family. It's not your Walter, but the residences and births in Apolda, Naumburg and Jena could be a hind for common ancestors.