Looking for Information on My Grandparents Auguste Rosa Olga Ferdinand Louis Karl Tischer from Lobenstein Thuringer

Looking for information on Auguste Rosa Olga & Ferdinand Louis Karl Tischer. My grandmothers maiden name is Konig. I know there's a connection to Hubert Priebe of Antigo, Wisconsin from a letter dated May 1954, to my mother Martha Rosa Olga Tischer. It mentions the death of Uncle Willie in 1952 at the age of 81. Asking my mother to verify where uncle willie was born in germany and that he must be related on the Konig side of the family. I have reached a dead end. I know that Hubert had a brother Amandus Priebe who married Clara Zellmer and adopted her daughter Edna. Hubert lived on Licoln Avenue in Antigo Wisconsin and I believe he passed away in 1969.